By | 23.12.2016

# Swap Two Numbers without using third variable

Write a C++ Program to Swap Two Numbers without using third variable. C++ Program to Swap Two Numbers without  third variable. Here’s simple Program to Swap Two Numbers without using temp variable in C++ Programming Language.

Here is source code of the C++ Program to Swap Two Numbers without using third variable. The C++ program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.

## SOURCE CODE : :

```/*  C++ Program to Swap Two Numbers without using third variable  */

#include <iostream>
using namespace std;

int main()
{

int a,b ;

cout<<"Enter 1st number :: ";
cin>>a;
cout<<"\nEnter 2nd number :: ";
cin>>b;

cout << "\nBefore swapping, Numbers are :: " << endl;
cout << "\n\ta = " << a << ", b = " << b << endl;

a = a + b;
b = a - b;
a = a - b;

cout << "\nAfter swapping, Numbers are :: " << endl;
cout << "\n\ta = " << a << ", b = " << b << endl;

return 0;
}```

### Output : :

```/*  C++ Program to Swap Two Numbers without using third variable  */

Enter 1st number :: 5

Enter 2nd number :: 9

Before swapping, Numbers are ::

a = 5, b = 9

After swapping, Numbers are ::

a = 9, b = 5

Process returned 0```

Above is the source code for C++ Program to Swap Two Numbers without using third variable which is successfully compiled and run on Windows System.The Output of the program is shown above .

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