diff options
Diffstat (limited to 'Bachelor/Prog1/examples/ch06')
25 files changed, 1489 insertions, 0 deletions
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_01/Fig06_01.cpp b/Bachelor/Prog1/examples/ch06/Fig06_01/Fig06_01.cpp new file mode 100644 index 0000000..0126a02 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_01/Fig06_01.cpp @@ -0,0 +1,82 @@ +// Fig. 6.1: fig06_01.cpp
+// Create a structure, set its members, and print it.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include <iomanip>
+
+using std::setfill;
+using std::setw;
+
+// structure definition
+struct Time {
+ int hour; // 0-23 (24-hour clock format)
+ int minute; // 0-59
+ int second; // 0-59
+
+}; // end struct Time
+
+void printUniversal( const Time & ); // prototype
+void printStandard( const Time & ); // prototype
+
+int main()
+{
+ Time dinnerTime; // variable of new type Time
+
+ dinnerTime.hour = 18; // set hour member of dinnerTime
+ dinnerTime.minute = 30; // set minute member of dinnerTime
+ dinnerTime.second = 0; // set second member of dinnerTime
+
+ cout << "Dinner will be held at ";
+ printUniversal( dinnerTime );
+ cout << " universal time,\nwhich is ";
+ printStandard( dinnerTime );
+ cout << " standard time.\n";
+
+ dinnerTime.hour = 29; // set hour to invalid value
+ dinnerTime.minute = 73; // set minute to invalid value
+
+ cout << "\nTime with invalid values: ";
+ printUniversal( dinnerTime );
+ cout << endl;
+
+ return 0;
+
+} // end main
+
+// print time in universal-time format
+void printUniversal( const Time &t )
+{
+ cout << setfill( '0' ) << setw( 2 ) << t.hour << ":"
+ << setw( 2 ) << t.minute << ":"
+ << setw( 2 ) << t.second;
+
+} // end function printUniversal
+
+// print time in standard-time format
+void printStandard( const Time &t )
+{
+ cout << ( ( t.hour == 0 || t.hour == 12 ) ?
+ 12 : t.hour % 12 ) << ":" << setfill( '0' )
+ << setw( 2 ) << t.minute << ":"
+ << setw( 2 ) << t.second
+ << ( t.hour < 12 ? " AM" : " PM" );
+
+} // end function printStandard
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_03/Fig06_03.cpp b/Bachelor/Prog1/examples/ch06/Fig06_03/Fig06_03.cpp new file mode 100644 index 0000000..3bb7a28 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_03/Fig06_03.cpp @@ -0,0 +1,114 @@ +// Fig. 6.3: fig06_03.cpp
+// Time class.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include <iomanip>
+
+using std::setfill;
+using std::setw;
+
+// Time abstract data type (ADT) definition
+class Time {
+
+public:
+ Time(); // constructor
+ void setTime( int, int, int ); // set hour, minute, second
+ void printUniversal(); // print universal-time format
+ void printStandard(); // print standard-time format
+
+private:
+ int hour; // 0 - 23 (24-hour clock format)
+ int minute; // 0 - 59
+ int second; // 0 - 59
+
+}; // end class Time
+
+// Time constructor initializes each data member to zero and
+// ensures all Time objects start in a consistent state
+Time::Time()
+{
+ hour = minute = second = 0;
+
+} // end constructor Time
+
+// set new Time value using universal time, perform validity
+// checks on the data values and set invalid values to zero
+void Time::setTime( int h, int m, int s )
+{
+ hour = ( h >= 0 && h < 24 ) ? h : 0;
+ minute = ( m >= 0 && m < 60 ) ? m : 0;
+ second = ( s >= 0 && s < 60 ) ? s : 0;
+
+} // end function setTime
+
+// print Time in universal format
+void Time::printUniversal()
+{
+ cout << setfill( '0' ) << setw( 2 ) << hour << ":"
+ << setw( 2 ) << minute << ":"
+ << setw( 2 ) << second;
+
+} // end function printUniversal
+
+// print Time in standard format
+void Time::printStandard()
+{
+ cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
+ << ":" << setfill( '0' ) << setw( 2 ) << minute
+ << ":" << setw( 2 ) << second
+ << ( hour < 12 ? " AM" : " PM" );
+
+} // end function printStandard
+
+int main()
+{
+ Time t; // instantiate object t of class Time
+
+ // output Time object t's initial values
+ cout << "The initial universal time is ";
+ t.printUniversal(); // 00:00:00
+
+ cout << "\nThe initial standard time is ";
+ t.printStandard(); // 12:00:00 AM
+
+ t.setTime( 13, 27, 6 ); // change time
+
+ // output Time object t's new values
+ cout << "\n\nUniversal time after setTime is ";
+ t.printUniversal(); // 13:27:06
+
+ cout << "\nStandard time after setTime is ";
+ t.printStandard(); // 1:27:06 PM
+
+ t.setTime( 99, 99, 99 ); // attempt invalid settings
+
+ // output t's values after specifying invalid values
+ cout << "\n\nAfter attempting invalid settings:"
+ << "\nUniversal time: ";
+ t.printUniversal(); // 00:00:00
+
+ cout << "\nStandard time: ";
+ t.printStandard(); // 12:00:00 AM
+ cout << endl;
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_04/Fig06_04.cpp b/Bachelor/Prog1/examples/ch06/Fig06_04/Fig06_04.cpp new file mode 100644 index 0000000..68c1be3 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_04/Fig06_04.cpp @@ -0,0 +1,58 @@ +// Fig. 6.4: fig06_04.cpp
+// Demonstrating the class member access operators . and ->
+//
+// CAUTION: IN FUTURE EXAMPLES WE AVOID PUBLIC DATA!
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// class Count definition
+class Count {
+
+public:
+ int x;
+
+ void print()
+ {
+ cout << x << endl;
+ }
+
+}; // end class Count
+
+int main()
+{
+ Count counter; // create counter object
+ Count *counterPtr = &counter; // create pointer to counter
+ Count &counterRef = counter; // create reference to counter
+
+ cout << "Assign 1 to x and print using the object's name: ";
+ counter.x = 1; // assign 1 to data member x
+ counter.print(); // call member function print
+
+ cout << "Assign 2 to x and print using a reference: ";
+ counterRef.x = 2; // assign 2 to data member x
+ counterRef.print(); // call member function print
+
+ cout << "Assign 3 to x and print using a pointer: ";
+ counterPtr->x = 3; // assign 3 to data member x
+ counterPtr->print(); // call member function print
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_05_07/Fig06_05.cpp b/Bachelor/Prog1/examples/ch06/Fig06_05_07/Fig06_05.cpp new file mode 100644 index 0000000..85cca47 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_05_07/Fig06_05.cpp @@ -0,0 +1,57 @@ +// Fig. 6.7: fig06_07.cpp
+// Program to test class Time.
+// NOTE: This file must be compiled with time1.cpp.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include definition of class Time from time1.h
+#include "time1.h"
+
+int main()
+{
+ Time t; // instantiate object t of class Time
+
+ // output Time object t's initial values
+ cout << "The initial universal time is ";
+ t.printUniversal(); // 00:00:00
+ cout << "\nThe initial standard time is ";
+ t.printStandard(); // 12:00:00 AM
+
+ t.setTime( 13, 27, 6 ); // change time
+
+ // output Time object t's new values
+ cout << "\n\nUniversal time after setTime is ";
+ t.printUniversal(); // 13:27:06
+ cout << "\nStandard time after setTime is ";
+ t.printStandard(); // 1:27:06 PM
+
+ t.setTime( 99, 99, 99 ); // attempt invalid settings
+
+ // output t's values after specifying invalid values
+ cout << "\n\nAfter attempting invalid settings:"
+ << "\nUniversal time: ";
+ t.printUniversal(); // 00:00:00
+ cout << "\nStandard time: ";
+ t.printStandard(); // 12:00:00 AM
+ cout << endl;
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_05_07/Time1.cpp b/Bachelor/Prog1/examples/ch06/Fig06_05_07/Time1.cpp new file mode 100644 index 0000000..6ffea1c --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_05_07/Time1.cpp @@ -0,0 +1,65 @@ +// Fig. 6.6: time1.cpp
+// Member-function definitions for class Time.
+#include <iostream>
+
+using std::cout;
+
+#include <iomanip>
+
+using std::setfill;
+using std::setw;
+
+// include definition of class Time from time1.h
+#include "time1.h"
+
+// Time constructor initializes each data member to zero.
+// Ensures all Time objects start in a consistent state.
+Time::Time()
+{
+ hour = minute = second = 0;
+
+} // end Time constructor
+
+// Set new Time value using universal time. Perform validity
+// checks on the data values. Set invalid values to zero.
+void Time::setTime( int h, int m, int s )
+{
+ hour = ( h >= 0 && h < 24 ) ? h : 0;
+ minute = ( m >= 0 && m < 60 ) ? m : 0;
+ second = ( s >= 0 && s < 60 ) ? s : 0;
+
+} // end function setTime
+
+// print Time in universal format
+void Time::printUniversal()
+{
+ cout << setfill( '0' ) << setw( 2 ) << hour << ":"
+ << setw( 2 ) << minute << ":"
+ << setw( 2 ) << second;
+
+} // end function printUniversal
+
+// print Time in standard format
+void Time::printStandard()
+{
+ cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
+ << ":" << setfill( '0' ) << setw( 2 ) << minute
+ << ":" << setw( 2 ) << second
+ << ( hour < 12 ? " AM" : " PM" );
+
+} // end function printStandard
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_05_07/Time1.h b/Bachelor/Prog1/examples/ch06/Fig06_05_07/Time1.h new file mode 100644 index 0000000..9adaba7 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_05_07/Time1.h @@ -0,0 +1,40 @@ +// Fig. 6.5: time1.h
+// Declaration of class Time.
+// Member functions are defined in time1.cpp
+
+// prevent multiple inclusions of header file
+#ifndef TIME1_H
+#define TIME1_H
+
+// Time abstract data type definition
+class Time {
+
+public:
+ Time(); // constructor
+ void setTime( int, int, int ); // set hour, minute, second
+ void printUniversal(); // print universal-time format
+ void printStandard(); // print standard-time format
+
+private:
+ int hour; // 0 - 23 (24-hour clock format)
+ int minute; // 0 - 59
+ int second; // 0 - 59
+
+}; // end class Time
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_08/Fig06_08.cpp b/Bachelor/Prog1/examples/ch06/Fig06_08/Fig06_08.cpp new file mode 100644 index 0000000..93cacc4 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_08/Fig06_08.cpp @@ -0,0 +1,38 @@ +// Fig. 6.8: fig06_08.cpp
+// Demonstrate errors resulting from attempts
+// to access private class members.
+#include <iostream>
+
+using std::cout;
+
+// include definition of class Time from time1.h
+#include "time1.h"
+
+int main()
+{
+ Time t; // create Time object
+
+
+ t.hour = 7; // error: 'Time::hour' is not accessible
+
+ // error: 'Time::minute' is not accessible
+ cout << "minute = " << t.minute;
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_08/Time1.cpp b/Bachelor/Prog1/examples/ch06/Fig06_08/Time1.cpp new file mode 100644 index 0000000..0f53ccf --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_08/Time1.cpp @@ -0,0 +1,65 @@ +// Fig. 6.6: time1.cpp
+// Member-function definitions for class Time.
+#include <iostream>
+
+using std::cout;
+
+#include <iomanip>
+
+using std::setfill;
+using std::setw;
+
+// include definition of class Time from time1.h
+#include "time1.h"
+
+// Time constructor initializes each data member to zero.
+// Ensures all Time objects start in a consistent state.
+Time::Time()
+{
+ hour = minute = second = 0;
+
+} // end Time constructor
+
+// Set new Time value using universal time. Perform validity
+// checks on the data values. Set invalid values to zero.
+void Time::setTime( int h, int m, int s )
+{
+ hour = ( h >= 0 && h < 24 ) ? h : 0;
+ minute = ( m >= 0 && m < 60 ) ? m : 0;
+ second = ( s >= 0 && s < 60 ) ? s : 0;
+
+} // end function setTime
+
+// print Time in universal format
+void Time::printUniversal()
+{
+ cout << setfill( '0' ) << setw( 2 ) << hour << ":"
+ << setw( 2 ) << minute << ":"
+ << setw( 2 ) << second;
+
+} // end function printUniversal
+
+// print Time in standard format
+void Time::printStandard()
+{
+ cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
+ << ":" << setfill( '0' ) << setw( 2 ) << minute
+ << ":" << setw( 2 ) << second
+ << ( hour < 12 ? " AM" : " PM" );
+
+} // end function printStandard
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_08/Time1.h b/Bachelor/Prog1/examples/ch06/Fig06_08/Time1.h new file mode 100644 index 0000000..9adaba7 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_08/Time1.h @@ -0,0 +1,40 @@ +// Fig. 6.5: time1.h
+// Declaration of class Time.
+// Member functions are defined in time1.cpp
+
+// prevent multiple inclusions of header file
+#ifndef TIME1_H
+#define TIME1_H
+
+// Time abstract data type definition
+class Time {
+
+public:
+ Time(); // constructor
+ void setTime( int, int, int ); // set hour, minute, second
+ void printUniversal(); // print universal-time format
+ void printStandard(); // print standard-time format
+
+private:
+ int hour; // 0 - 23 (24-hour clock format)
+ int minute; // 0 - 59
+ int second; // 0 - 59
+
+}; // end class Time
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_09_11/Fig06_11.cpp b/Bachelor/Prog1/examples/ch06/Fig06_09_11/Fig06_11.cpp new file mode 100644 index 0000000..82787f6 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_09_11/Fig06_11.cpp @@ -0,0 +1,32 @@ +// Fig. 6.11: fig06_11.cpp
+// Demonstrating a utility function.
+// Compile this program with salesp.cpp
+
+// include SalesPerson class definition from salesp.h
+#include "salesp.h"
+
+int main()
+{
+ SalesPerson s; // create SalesPerson object s
+
+ s.getSalesFromUser(); // note simple sequential code; no
+ s.printAnnualSales(); // control structures in main
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_09_11/Salesp.cpp b/Bachelor/Prog1/examples/ch06/Fig06_09_11/Salesp.cpp new file mode 100644 index 0000000..4c05a6d --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_09_11/Salesp.cpp @@ -0,0 +1,86 @@ +// Fig. 6.10: salesp.cpp
+// Member functions for class SalesPerson.
+#include <iostream>
+
+using std::cout;
+using std::cin;
+using std::endl;
+using std::fixed;
+
+#include <iomanip>
+
+using std::setprecision;
+
+// include SalesPerson class definition from salesp.h
+#include "salesp.h"
+
+// initialize elements of array sales to 0.0
+SalesPerson::SalesPerson()
+{
+ for ( int i = 0; i < 12; i++ )
+ sales[ i ] = 0.0;
+
+} // end SalesPerson constructor
+
+// get 12 sales figures from the user at the keyboard
+void SalesPerson::getSalesFromUser()
+{
+ double salesFigure;
+
+ for ( int i = 1; i <= 12; i++ ) {
+ cout << "Enter sales amount for month " << i << ": ";
+ cin >> salesFigure;
+ setSales( i, salesFigure );
+
+ } // end for
+
+} // end function getSalesFromUser
+
+// set one of the 12 monthly sales figures; function subtracts
+// one from month value for proper subscript in sales array
+void SalesPerson::setSales( int month, double amount )
+{
+ // test for valid month and amount values
+ if ( month >= 1 && month <= 12 && amount > 0 )
+ sales[ month - 1 ] = amount; // adjust for subscripts 0-11
+
+ else // invalid month or amount value
+ cout << "Invalid month or sales figure" << endl;
+
+} // end function setSales
+
+// print total annual sales (with the help of utility function)
+void SalesPerson::printAnnualSales()
+{
+ cout << setprecision( 2 ) << fixed
+ << "\nThe total annual sales are: $"
+ << totalAnnualSales() << endl; // call utility function
+
+} // end function printAnnualSales
+
+// private utility function to total annual sales
+double SalesPerson::totalAnnualSales()
+{
+ double total = 0.0; // initialize total
+
+ for ( int i = 0; i < 12; i++ ) // summarize sales results
+ total += sales[ i ];
+
+ return total;
+
+} // end function totalAnnualSales
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_09_11/Salesp.h b/Bachelor/Prog1/examples/ch06/Fig06_09_11/Salesp.h new file mode 100644 index 0000000..240e3e7 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_09_11/Salesp.h @@ -0,0 +1,36 @@ +// Fig. 6.9: salesp.h
+// SalesPerson class definition.
+// Member functions defined in salesp.cpp.
+#ifndef SALESP_H
+#define SALESP_H
+
+class SalesPerson {
+
+public:
+ SalesPerson(); // constructor
+ void getSalesFromUser(); // input sales from keyboard
+ void setSales( int, double ); // set sales for a month
+ void printAnnualSales(); // summarize and print sales
+
+private:
+ double totalAnnualSales(); // utility function
+ double sales[ 12 ]; // 12 monthly sales figures
+
+}; // end class SalesPerson
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_12_14/Fig06_14.cpp b/Bachelor/Prog1/examples/ch06/Fig06_12_14/Fig06_14.cpp new file mode 100644 index 0000000..8a7546a --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_12_14/Fig06_14.cpp @@ -0,0 +1,63 @@ +// Fig. 6.14: fig06_14.cpp
+// Demonstrating a default constructor for class Time.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include definition of class Time from time2.h
+#include "time2.h"
+
+int main()
+{
+ Time t1; // all arguments defaulted
+ Time t2( 2 ); // minute and second defaulted
+ Time t3( 21, 34 ); // second defaulted
+ Time t4( 12, 25, 42 ); // all values specified
+ Time t5( 27, 74, 99 ); // all bad values specified
+
+ cout << "Constructed with:\n\n"
+ << "all default arguments:\n ";
+ t1.printUniversal(); // 00:00:00
+ cout << "\n ";
+ t1.printStandard(); // 12:00:00 AM
+
+ cout << "\n\nhour specified; default minute and second:\n ";
+ t2.printUniversal(); // 02:00:00
+ cout << "\n ";
+ t2.printStandard(); // 2:00:00 AM
+
+ cout << "\n\nhour and minute specified; default second:\n ";
+ t3.printUniversal(); // 21:34:00
+ cout << "\n ";
+ t3.printStandard(); // 9:34:00 PM
+
+ cout << "\n\nhour, minute, and second specified:\n ";
+ t4.printUniversal(); // 12:25:42
+ cout << "\n ";
+ t4.printStandard(); // 12:25:42 PM
+
+ cout << "\n\nall invalid values specified:\n ";
+ t5.printUniversal(); // 00:00:00
+ cout << "\n ";
+ t5.printStandard(); // 12:00:00 AM
+ cout << endl;
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_12_14/Time2.cpp b/Bachelor/Prog1/examples/ch06/Fig06_12_14/Time2.cpp new file mode 100644 index 0000000..5a5d42c --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_12_14/Time2.cpp @@ -0,0 +1,65 @@ +// Fig. 6.13: time2.cpp
+// Member-function definitions for class Time.
+#include <iostream>
+
+using std::cout;
+
+#include <iomanip>
+
+using std::setfill;
+using std::setw;
+
+// include definition of class Time from time2.h
+#include "time2.h"
+
+// Time constructor initializes each data member to zero;
+// ensures all Time objects start in a consistent state
+Time::Time( int hr, int min, int sec )
+{
+ setTime( hr, min, sec ); // validate and set time
+
+} // end Time constructor
+
+// set new Time value using universal time, perform validity
+// checks on the data values and set invalid values to zero
+void Time::setTime( int h, int m, int s )
+{
+ hour = ( h >= 0 && h < 24 ) ? h : 0;
+ minute = ( m >= 0 && m < 60 ) ? m : 0;
+ second = ( s >= 0 && s < 60 ) ? s : 0;
+
+} // end function setTime
+
+// print Time in universal format
+void Time::printUniversal()
+{
+ cout << setfill( '0' ) << setw( 2 ) << hour << ":"
+ << setw( 2 ) << minute << ":"
+ << setw( 2 ) << second;
+
+} // end function printUniversal
+
+// print Time in standard format
+void Time::printStandard()
+{
+ cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
+ << ":" << setfill( '0' ) << setw( 2 ) << minute
+ << ":" << setw( 2 ) << second
+ << ( hour < 12 ? " AM" : " PM" );
+
+} // end function printStandard
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_12_14/Time2.h b/Bachelor/Prog1/examples/ch06/Fig06_12_14/Time2.h new file mode 100644 index 0000000..3b99b88 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_12_14/Time2.h @@ -0,0 +1,40 @@ +// Fig. 6.12: time2.h
+// Declaration of class Time.
+// Member functions defined in time2.cpp.
+
+// prevent multiple inclusions of header file
+#ifndef TIME2_H
+#define TIME2_H
+
+// Time abstract data type definition
+class Time {
+
+public:
+ Time( int = 0, int = 0, int = 0); // default constructor
+ void setTime( int, int, int ); // set hour, minute, second
+ void printUniversal(); // print universal-time format
+ void printStandard(); // print standard-time format
+
+private:
+ int hour; // 0 - 23 (24-hour clock format)
+ int minute; // 0 - 59
+ int second; // 0 - 59
+
+}; // end class Time
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_15_17/Create.cpp b/Bachelor/Prog1/examples/ch06/Fig06_15_17/Create.cpp new file mode 100644 index 0000000..1f7614f --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_15_17/Create.cpp @@ -0,0 +1,47 @@ +// Fig. 6.16: create.cpp
+// Member-function definitions for class CreateAndDestroy
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include CreateAndDestroy class definition from create.h
+#include "create.h"
+
+// constructor
+CreateAndDestroy::CreateAndDestroy(
+ int objectNumber, char *messagePtr )
+{
+ objectID = objectNumber;
+ message = messagePtr;
+
+ cout << "Object " << objectID << " constructor runs "
+ << message << endl;
+
+} // end CreateAndDestroy constructor
+
+// destructor
+CreateAndDestroy::~CreateAndDestroy()
+{
+ // the following line is for pedagogic purposes only
+ cout << ( objectID == 1 || objectID == 6 ? "\n" : "" );
+
+ cout << "Object " << objectID << " destructor runs "
+ << message << endl;
+
+} // end ~CreateAndDestroy destructor
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_15_17/Create.h b/Bachelor/Prog1/examples/ch06/Fig06_15_17/Create.h new file mode 100644 index 0000000..f0a73cb --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_15_17/Create.h @@ -0,0 +1,34 @@ +// Fig. 6.15: create.h
+// Definition of class CreateAndDestroy.
+// Member functions defined in create.cpp.
+#ifndef CREATE_H
+#define CREATE_H
+
+class CreateAndDestroy {
+
+public:
+ CreateAndDestroy( int, char * ); // constructor
+ ~CreateAndDestroy(); // destructor
+
+private:
+ int objectID;
+ char *message;
+
+}; // end class CreateAndDestroy
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
\ No newline at end of file diff --git a/Bachelor/Prog1/examples/ch06/Fig06_15_17/Fig06_17.cpp b/Bachelor/Prog1/examples/ch06/Fig06_15_17/Fig06_17.cpp new file mode 100644 index 0000000..3bd2906 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_15_17/Fig06_17.cpp @@ -0,0 +1,68 @@ +// Fig. 6.17: fig06_17.cpp
+// Demonstrating the order in which constructors and
+// destructors are called.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include CreateAndDestroy class definition from create.h
+#include "create.h"
+
+void create( void ); // prototype
+
+// global object
+CreateAndDestroy first( 1, "(global before main)" );
+
+int main()
+{
+ cout << "\nMAIN FUNCTION: EXECUTION BEGINS" << endl;
+
+ CreateAndDestroy second( 2, "(local automatic in main)" );
+
+ static CreateAndDestroy third(
+ 3, "(local static in main)" );
+
+ create(); // call function to create objects
+
+ cout << "\nMAIN FUNCTION: EXECUTION RESUMES" << endl;
+
+ CreateAndDestroy fourth( 4, "(local automatic in main)" );
+
+ cout << "\nMAIN FUNCTION: EXECUTION ENDS" << endl;
+
+ return 0;
+
+} // end main
+
+// function to create objects
+void create( void )
+{
+ cout << "\nCREATE FUNCTION: EXECUTION BEGINS" << endl;
+
+ CreateAndDestroy fifth( 5, "(local automatic in create)" );
+
+ static CreateAndDestroy sixth(
+ 6, "(local static in create)" );
+
+ CreateAndDestroy seventh(
+ 7, "(local automatic in create)" );
+
+ cout << "\nCREATE FUNCTION: EXECUTION ENDS" << endl;
+
+} // end function create
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_18_20/Fig06_20.cpp b/Bachelor/Prog1/examples/ch06/Fig06_18_20/Fig06_20.cpp new file mode 100644 index 0000000..58f5bb9 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_18_20/Fig06_20.cpp @@ -0,0 +1,82 @@ +// Fig. 6.20: fig06_20.cpp
+// Demonstrating the Time class set and get functions
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include definition of class Time from time3.h
+#include "time3.h"
+
+void incrementMinutes( Time &, const int ); // prototype
+
+int main()
+{
+ Time t; // create Time object
+
+ // set time using individual set functions
+ t.setHour( 17 ); // set hour to valid value
+ t.setMinute( 34 ); // set minute to valid value
+ t.setSecond( 25 ); // set second to valid value
+
+ // use get functions to obtain hour, miunute and second
+ cout << "Result of setting all valid values:\n"
+ << " Hour: " << t.getHour()
+ << " Minute: " << t.getMinute()
+ << " Second: " << t.getSecond();
+
+ // set time using individual set functions
+ t.setHour( 234 ); // invalid hour set to 0
+ t.setMinute( 43 ); // set minute to valid value
+ t.setSecond( 6373 ); // invalid second set to 0
+
+ // display hour, minute and second after setting
+ // invalid hour and second values
+ cout << "\n\nResult of attempting to set invalid hour and"
+ << " second:\n Hour: " << t.getHour()
+ << " Minute: " << t.getMinute()
+ << " Second: " << t.getSecond() << "\n\n";
+
+ t.setTime( 11, 58, 0 ); // set time
+ incrementMinutes( t, 3 ); // increment t's minute by 3
+
+ return 0;
+
+} // end main
+
+// add specified number of minutes to a Time object
+void incrementMinutes( Time &tt, const int count )
+{
+ cout << "Incrementing minute " << count
+ << " times:\nStart time: ";
+ tt.printStandard();
+
+ for ( int i = 0; i < count; i++ ) {
+ tt.setMinute( ( tt.getMinute() + 1 ) % 60 );
+
+ if ( tt.getMinute() == 0 )
+ tt.setHour( ( tt.getHour() + 1 ) % 24 );
+
+ cout << "\nminute + 1: ";
+ tt.printStandard();
+
+ } // end for
+
+ cout << endl;
+
+} // end function incrementMinutes
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_18_20/Time3.cpp b/Bachelor/Prog1/examples/ch06/Fig06_18_20/Time3.cpp new file mode 100644 index 0000000..7cf0176 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_18_20/Time3.cpp @@ -0,0 +1,107 @@ +// Fig. 6.19: time3.cpp
+// Member-function definitions for Time class.
+#include <iostream>
+
+using std::cout;
+
+#include <iomanip>
+
+using std::setfill;
+using std::setw;
+
+// include definition of class Time from time3.h
+#include "time3.h"
+
+// constructor function to initialize private data;
+// calls member function setTime to set variables;
+// default values are 0 (see class definition)
+Time::Time( int hr, int min, int sec )
+{
+ setTime( hr, min, sec );
+
+} // end Time constructor
+
+// set hour, minute and second values
+void Time::setTime( int h, int m, int s )
+{
+ setHour( h );
+ setMinute( m );
+ setSecond( s );
+
+} // end function setTime
+
+// set hour value
+void Time::setHour( int h )
+{
+ hour = ( h >= 0 && h < 24 ) ? h : 0;
+
+} // end function setHour
+
+// set minute value
+void Time::setMinute( int m )
+{
+ minute = ( m >= 0 && m < 60 ) ? m : 0;
+
+} // end function setMinute
+
+// set second value
+void Time::setSecond( int s )
+{
+ second = ( s >= 0 && s < 60 ) ? s : 0;
+
+} // end function setSecond
+
+// return hour value
+int Time::getHour()
+{
+ return hour;
+
+} // end function getHour
+
+// return minute value
+int Time::getMinute()
+{
+ return minute;
+
+} // end function getMinute
+
+// return second value
+int Time::getSecond()
+{
+ return second;
+
+} // end function getSecond
+
+// print Time in universal format
+void Time::printUniversal()
+{
+ cout << setfill( '0' ) << setw( 2 ) << hour << ":"
+ << setw( 2 ) << minute << ":"
+ << setw( 2 ) << second;
+
+} // end function printUniversal
+
+// print Time in standard format
+void Time::printStandard()
+{
+ cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
+ << ":" << setfill( '0' ) << setw( 2 ) << minute
+ << ":" << setw( 2 ) << second
+ << ( hour < 12 ? " AM" : " PM" );
+
+} // end function printStandard
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_18_20/Time3.h b/Bachelor/Prog1/examples/ch06/Fig06_18_20/Time3.h new file mode 100644 index 0000000..2f68d31 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_18_20/Time3.h @@ -0,0 +1,50 @@ +// Fig. 6.18: time3.h
+// Declaration of class Time.
+// Member functions defined in time3.cpp
+
+// prevent multiple inclusions of header file
+#ifndef TIME3_H
+#define TIME3_H
+
+class Time {
+
+public:
+ Time( int = 0, int = 0, int = 0 ); // default constructor
+
+ // set functions
+ void setTime( int, int, int ); // set hour, minute, second
+ void setHour( int ); // set hour
+ void setMinute( int ); // set minute
+ void setSecond( int ); // set second
+
+ // get functions
+ int getHour(); // return hour
+ int getMinute(); // return minute
+ int getSecond(); // return second
+
+ void printUniversal(); // output universal-time format
+ void printStandard(); // output standard-time format
+
+private:
+ int hour; // 0 - 23 (24-hour clock format)
+ int minute; // 0 - 59
+ int second; // 0 - 59
+
+}; // end clas Time
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_21_23/Fig06_23.cpp b/Bachelor/Prog1/examples/ch06/Fig06_21_23/Fig06_23.cpp new file mode 100644 index 0000000..a5b14b6 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_21_23/Fig06_23.cpp @@ -0,0 +1,53 @@ +// Fig. 6.23: fig06_23.cpp
+// Demonstrating a public member function that
+// returns a reference to a private data member.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include definition of class Time from time4.h
+#include "time4.h"
+
+int main()
+{
+ Time t;
+
+ // store in hourRef the reference returned by badSetHour
+ int &hourRef = t.badSetHour( 20 );
+
+ cout << "Hour before modification: " << hourRef;
+
+ // use hourRef to set invalid value in Time object t
+ hourRef = 30;
+
+ cout << "\nHour after modification: " << t.getHour();
+
+ // Dangerous: Function call that returns
+ // a reference can be used as an lvalue!
+ t.badSetHour( 12 ) = 74;
+
+ cout << "\n\n*********************************\n"
+ << "POOR PROGRAMMING PRACTICE!!!!!!!!\n"
+ << "badSetHour as an lvalue, Hour: "
+ << t.getHour()
+ << "\n*********************************" << endl;
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_21_23/Time4.cpp b/Bachelor/Prog1/examples/ch06/Fig06_21_23/Time4.cpp new file mode 100644 index 0000000..eef65f2 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_21_23/Time4.cpp @@ -0,0 +1,55 @@ +// Fig. 6.22: time4.cpp
+// Member-function definitions for Time class.
+
+// include definition of class Time from time4.h
+#include "time4.h"
+
+// constructor function to initialize private data;
+// calls member function setTime to set variables;
+// default values are 0 (see class definition)
+Time::Time( int hr, int min, int sec )
+{
+ setTime( hr, min, sec );
+
+} // end Time constructor
+
+// set values of hour, minute and second
+void Time::setTime( int h, int m, int s )
+{
+ hour = ( h >= 0 && h < 24 ) ? h : 0;
+ minute = ( m >= 0 && m < 60 ) ? m : 0;
+ second = ( s >= 0 && s < 60 ) ? s : 0;
+
+} // end function setTime
+
+// return hour value
+int Time::getHour()
+{
+ return hour;
+
+} // end function getHour
+
+// POOR PROGRAMMING PRACTICE:
+// Returning a reference to a private data member.
+int &Time::badSetHour( int hh )
+{
+ hour = ( hh >= 0 && hh < 24 ) ? hh : 0;
+
+ return hour; // DANGEROUS reference return
+
+} // end function badSetHour
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_21_23/Time4.h b/Bachelor/Prog1/examples/ch06/Fig06_21_23/Time4.h new file mode 100644 index 0000000..92a5d84 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_21_23/Time4.h @@ -0,0 +1,40 @@ +// Fig. 6.21: time4.h
+// Declaration of class Time.
+// Member functions defined in time4.cpp
+
+// prevent multiple inclusions of header file
+#ifndef TIME4_H
+#define TIME4_H
+
+class Time {
+
+public:
+ Time( int = 0, int = 0, int = 0 );
+ void setTime( int, int, int );
+ int getHour();
+
+ int &badSetHour( int ); // DANGEROUS reference return
+
+private:
+ int hour;
+ int minute;
+ int second;
+
+}; // end class Time
+
+#endif
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
diff --git a/Bachelor/Prog1/examples/ch06/Fig06_24/Fig06_24.cpp b/Bachelor/Prog1/examples/ch06/Fig06_24/Fig06_24.cpp new file mode 100644 index 0000000..9df3198 --- /dev/null +++ b/Bachelor/Prog1/examples/ch06/Fig06_24/Fig06_24.cpp @@ -0,0 +1,72 @@ +// Fig. 6.24: fig06_24.cpp
+// Demonstrating that class objects can be assigned
+// to each other using default memberwise assignment.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// class Date definition
+class Date {
+
+public:
+ Date( int = 1, int = 1, int = 1990 ); // default constructor
+ void print();
+
+private:
+ int month;
+ int day;
+ int year;
+
+}; // end class Date
+
+// Date constructor with no range checking
+Date::Date( int m, int d, int y )
+{
+ month = m;
+ day = d;
+ year = y;
+
+} // end constructor Date
+
+// print Date in the format mm-dd-yyyy
+void Date::print()
+{
+ cout << month << '-' << day << '-' << year;
+
+} // end function print
+
+int main()
+{
+ Date date1( 7, 4, 2002 );
+ Date date2; // date2 defaults to 1/1/1990
+
+ cout << "date1 = ";
+ date1.print();
+ cout << "\ndate2 = ";
+ date2.print();
+
+ date2 = date1; // default memberwise assignment
+
+ cout << "\n\nAfter default memberwise assignment, date2 = ";
+ date2.print();
+ cout << endl;
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
+ * Hall. All Rights Reserved. *
+ * *
+ * DISCLAIMER: The authors and publisher of this book have used their *
+ * best efforts in preparing the book. These efforts include the *
+ * development, research, and testing of the theories and programs *
+ * to determine their effectiveness. The authors and publisher make *
+ * no warranty of any kind, expressed or implied, with regard to these *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or *
+ * consequential damages in connection with, or arising out of, the *
+ * furnishing, performance, or use of these programs. *
+ *************************************************************************/
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