// Given an arbitrary set  of positive integer numbers
// finds how many are odd numbers and how many are even numbers

#include <iostream>

using std::cout;
using std::cin;
using std::endl;

// function main
int main() 
{
  int sumeven = 0;
  int sumodd = 0;
  int numtot = 0;  
  int number;

  cout << " Enter a positive integer number, -1 to exit ";
  cin >> number;

  while (number != -1) {
    
    if ((number % 2) == 0)
      sumeven++;
    else
      sumodd++;

    numtot++;
    cout << " Enter a positive integer number, -1 to exit ";
    cin >> number;

  } //end while 

  cout << " In a set of " << numtot << " positive integers " << endl
       << " there are " << sumeven << " even integers and " << sumodd 
       << " odd integers " << endl;

  return 0; // successful termination

} // end main