//fun6.cpp
//csci107 laura Toma

//what is the output of the following program? 


#include <iostream.h>


int foo(int a,int b) {

  int x;
  x = a-b;
  return x;
}



int main() {

  int a,b;

  cout << "Enter two values: ";
  cin >> a;
  cin >> b;

  cout << foo(a,b) << endl;
  cout << foo(b,a) << endl;
  cout << foo(a,a) << endl;
  cout << foo(5,2) << endl;

  return 1;
}