Swapping two integers without temporary variable.

We can do this thing in many ways, here are some.

int main()
{
        int x, y;
        printf("Enter x and y values \n");
        scanf("%d %d", &x, &y);
        printf("X=%d\t Y=%d\n", x, y);
        printf("AFTER SWAP \n");

        /* Swap using addition and subtraction */
        x = x+y;/*Limitation is there addition should */
        y = x-y;/* not over flow */
        x = x-y;
        printf("X=%d\t Y=%d\n", x, y);

        /* Swap using multiplication and division */
        x = x*y;/* Limitation is, Y should not be zero and*/
        y = x/y;/* and x*y should not overflow */
        x = x/y;
        printf("X=%d\t Y=%d\n", x, y);

        /* swap using exclusive OR */
        x = x^y;
        y = x^y;
        x = x^y;
        printf("X=%d\t Y=%d\n", x, y);

        return 0;
}