fig03_01.cpp

// fig03_01.cpp
// Solving the class-average problem using counter-controlled iteration.
#include <iostream>
using namespace std;

int main() {
   // initialization phase
   int total{0}; // initialize sum of grades entered by the user
   int gradeCounter{1}; // initialize grade # to be entered next

   // processing phase uses counter-controlled iteration
   while (gradeCounter <= 10) { // loop 10 times
      cout << "Enter grade: "; // prompt 
      int grade;
      cin >> grade; // input next grade
      total = total + grade; // add grade to total
      gradeCounter = gradeCounter + 1; // increment counter by 1
   } 

   // termination phase
   int average{total / 10}; // int division yields int result

   // display total and average of grades
   cout << "\nTotal of all 10 grades is " << total;
   cout << "\nClass average is " << average << "\n";
} 

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