Program to Swap 2 numbers without using third Variable | C Program

Input

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
printf("Swapping of two numbers without using temporary variable\n");
printf("Enter the two number");
scanf("%d%d",&a,&b);
printf("Numbers\n a=%d\t b=%d \n",a,b);
a=a+b;
b=a-b;
a=a-b;
printf("Numbers after\n Swapping a=%d\t b=%d",a,b);
getch();
}

Turbo C