C++ Program to Swap two numbers.

 

 

"Swapping of integers is defined as the variables that are interchanged after swapping the variables,called as Swapping of integers"

Example: If the input is given as a=5 and b=4 (before Swapping)
                    The output will be as a=4 and b=5 (after Swapping).

                Input:
                      a=20 and b=40, before swapping.
                Output:
                      a=40 and b=20, after swapping.

Sample Code for Swapping of integers is found here:

#include <iostream>            //Header file.

using namespace std;

void swap(int,int);

main()

{

   int a,b;

   cout<<"Enter two numbers";

   cin>>a>>b;

   cout<<"Before swap a="<<a<<",b="<<b;

  swap(a,b);                                                    //result before swapping

}

void swap(int a,int b)

{

   a=a+b;

   b=a-b;

   a=a-b;

   cout<<"After swap a="<<a<<",b="<<b;       //result after swapping

}