#include<iostream>//Required for cin, cout.
using namespace std;

//Function prototype
void swapIntegers(int&, int&);


int main()
{
  //Declare variables.
  int a, b;
  
  //Get values for a and b.
  cout << "enter two integer values: ";
  cin >> a >> b;
  
  //Print values of a and b before the swap
  cout << "Before swap:\n a is " << a << " b is " << b << endl;
  
  //Call swap function and print values
  swapIntegers(a,b);
  cout << "After call to swapIntegers\n a is " << a << " b is " << b << endl;
  
  //Exit main
  return 0;
}
/*****************************************************************/


void swapIntegers(int& me, int& you)

{
  //Declare temporary variable;
  int hold;
  
  //Swap the values in a and b
  hold = me;
  me = you;
  you = hold;
  
  //exit void function
  return;
}