Program To Swap Two Number Without Using Third Variable In C++

#include<iostream.h>

#include<conio.h>

void swap(int x, int y);

main()

{

clrscr();

int a,b,c;

cout<<"Enter First Number=";

cin>>a;

cout<<"Enter Second Number=";

cin>>b;

swap(a,b);

getch();

}

void swap(int x,int y)

{

int z;

z=x;

x=y;

y=z;

cout<<"\n first number="<<x;

cout<<"\n first number="<<y;

}