C PROGRAM TO SWAP TWO NUMBERS WITHOUT USING ANOTHER VARIABLE

#include<stdio.h>
void main()
{
int x,y;
clrscr();
printf("Enter two numbers\n");
scanf("%d %d",&x,&y);
printf("x=%d\n y=%d",x,y);
if(x>y)
   {
    (x=x-y);
    (y=y+x);
    (x=y-x);
    }
else
    {
    (y=y-x);
    (x=y+x);
    (y=x-y);
    }
printf("\n swapping success\nx=%d\n y=%d",x,y);
getch();
}