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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/Prog1/examples/ch02/Fig02_09.cpp | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/Prog1/examples/ch02/Fig02_09.cpp')
| -rw-r--r-- | Bachelor/Prog1/examples/ch02/Fig02_09.cpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/Bachelor/Prog1/examples/ch02/Fig02_09.cpp b/Bachelor/Prog1/examples/ch02/Fig02_09.cpp new file mode 100644 index 0000000..a0c1065 --- /dev/null +++ b/Bachelor/Prog1/examples/ch02/Fig02_09.cpp @@ -0,0 +1,76 @@ +// Fig. 2.9: fig02_09.cpp
+// Class average program with sentinel-controlled repetition.
+#include <iostream>
+
+using std::cout;
+using std::cin;
+using std::endl;
+using std::fixed;
+
+#include <iomanip> // parameterized stream manipulators
+
+using std::setprecision; // sets numeric output precision
+
+// function main begins program execution
+int main()
+{
+ int total; // sum of grades
+ int gradeCounter; // number of grades entered
+ int grade; // grade value
+
+ double average; // number with decimal point for average
+
+ // initialization phase
+ total = 0; // initialize total
+ gradeCounter = 0; // initialize loop counter
+
+ // processing phase
+ // get first grade from user
+ cout << "Enter grade, -1 to end: "; // prompt for input
+ cin >> grade; // read grade from user
+
+ // loop until sentinel value read from user
+ while ( grade != -1 ) {
+ total = total + grade; // add grade to total
+ gradeCounter = gradeCounter + 1; // increment counter
+
+ cout << "Enter grade, -1 to end: "; // prompt for input
+ cin >> grade; // read next grade
+
+ } // end while
+
+ // termination phase
+ // if user entered at least one grade ...
+ if ( gradeCounter != 0 ) {
+
+ // calculate average of all grades entered
+ average = static_cast< double >( total ) / gradeCounter;
+
+ // display average with two digits of precision
+ cout << "Class average is " << setprecision( 2 )
+ << fixed << average << endl;
+
+ } // end if part of if/else
+
+ else // if no grades were entered, output appropriate message
+ cout << "No grades were entered" << endl;
+
+ return 0; // indicate program ended successfully
+
+} // end function main
+
+
+/**************************************************************************
+ * (C) Copyright 1992-2003 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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