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Diffstat (limited to 'Bachelor/Prog1/examples/ch06/Fig06_03')
| -rw-r--r-- | Bachelor/Prog1/examples/ch06/Fig06_03/Fig06_03.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
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. *
+ *************************************************************************/
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