Swap Without Third Variable

Wap to take a number from user and to swap them without using third variable


#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int a,b;

cout<<"enter a,b";

cin>>a>>b;

a=a+b;

b=a-b;

a=a-b;

cout<<"a="<<a<<endl;

cout<<"b="<<b;

getch();

}

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OUTPUT:

 enter a,b 17

15

a=15

b=17

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