#include<stdio.h>
#include<conio.h>
void main ()
{
int a,b;
printf("\n\nEnter two numbers : \n");
scanf("%d%d",&a,&b);
printf("Before swapping......\n");
printf("a= %d\n",a);
printf("b= %d\n",b);
a=a+b;
b=a-b;
a=a-b;
printf("After swapping......\n");
printf("a= %d\n",a);
printf("b= %d\n",b);
getch();
}