An Example of a do-while Loop

#include <iostream.h>
/**********************************************************************
 Program: do_loop.C
 This program computes an average of all the numbers keyed in
 This program has errors
**********************************************************************/

int main()
{
     int num = 0, count = 0, total = 0;
     do {
          cout << "Enter a whole number, and -99 to quit:";
          cin >> num; // accept input
          count++; // increment counter 
          total += num; //accumulate the sum 
        } while (num != -99); // test the condition

     cout << "You keyed in " << count << " numbers \n";
     cout << "The average is " << float(total)/count << endl;
     return(0);
}