// Fig. 2.7: fig02_07.cpp
// Class average program with counter-controlled repetition.
#include <iostream>
    
using std::cout;
using std::cin;
using std::endl;
    
// function main begins program execution
int main()
{
  int total;        // sum of grades input by user
  int gradeCounter; // number of grade to be entered next
  int grade;        // grade value
  int average;      // average of grades
   
  // initialization phase
  total = 0;          // initialize total
  gradeCounter = 1;   // initialize loop counter
   
  // processing phase
  while ( gradeCounter <= 10 ) {       // loop 10 times
    cout << "Enter grade: ";          // prompt for input
    cin >> grade;                     // read grade from user
    total = total + grade;            // add grade to total
    gradeCounter = gradeCounter + 1;  // increment counter
  }
    
  // termination phase
  average = total / 10;                // integer division
    
  // display result
  cout << "Class average is " << average << endl;  
    
  return 0;   // indicate program ended successfully
    
} // end function main