Source of C++Average.cpp

Structures and functions

  1: // C++Average.cpp
  2: // 
  3: // Sample program in the C++ programming language.
  4: // 
  5: // Calculates the average of positive integers entered by the user.
  6: // 
  7: // Author:  Mark Young
  8: // Date:    2007-05-03

 10: #include <iostream>
 11: using namespace std;

 13: int main() {
 14:     // Identify myself...
 15:     cout << "\n\n\n\n\n\n\n\n\n\n"
 16:          << "Sample Program (C++)\n"
 17:          << "====================\n"
 18:          << "\nFinds the average of positive integers entered by the user.\n"
 19:          << "Enter a negative number to stop input.\n\n\n\n";

 21:     // Declare and initialize variables
 22:     int sum = 0;
 23:     int count = 0;
 24:     int n;

 26:     // Get the first number from the user
 27:     cout << "Enter a number: ";
 28:     cin >> n;

 30:     // keep going until you get a negative number
 31:     while (n >= 0) {
 32:         // Add the last number to the total
 33:         sum += n;

 35:         // add one to the count
 36:         count++;

 38:         // get the next number
 39:         cout << "Enter a number: ";
 40:         cin >> n;
 41:     } 

 43:     // Print the result
 44:     cout << "\n\nAverage = " << ((double)sum / (double)count) << "\n\n";

 46:     return 0;
 47: }