fig02_07.cpp

经典vc教程的例子程序

// Fig. 2.7: fig02_07.cpp
// Class average program with counter-controlled repetition
#include <iostream.h>

int main()
{
   int total,        // sum of grades 
       gradeCounter, // number of grades entered
       grade,        // one grade
       average;      // average of grades

   // initialization phase
   total = 0;                           // clear total
   gradeCounter = 1;                    // prepare to loop

   // processing phase
   while ( gradeCounter <= 10 ) {       // loop 10 times
      cout << "Enter grade: ";          // prompt for input
      cin >> grade;                     // input grade
      total = total + grade;            // add grade to total
      gradeCounter = gradeCounter + 1;  // increment counter
   }

   // termination phase
   average = total / 10;                // integer division
   cout << "Class average is " << average << endl;

   return 0;   // indicate program ended successfully
}