swap.cpp

/* TODO: write a function which takes two integer parameters and swaps
 * their contents.  That is, if for example x==0,y==1, then after calling
 * swap(x,y), it should be the case that x==1,y==0.  */

#include <iostream>
using std::cin;
using std::cout;
void swap(int &a, int &b){
  int temp = a;
  a=b;
  b=temp;

}
/* your answer goes here... */

int main()
{

  int x=0, y=1;
    cout << "x::"<< x<< " y::"<<y << std::endl;

  swap(x,y);

  cout << "x:: "<< x<< " y::"<<y << std::endl;
	/* TODO: write a little test here to make sure your function works. */
	return 0;
}

/* TODO: (bonus question) Can you rewrite your swap function so that it does
 * not use a temporary variable?  (Hint: use algebra/arithmetic...)  */

// vim:foldlevel=2