See(C) Code

shiv@ubuntu:~/ds/list$ cat swap.c /*  * Program to swap values of two variables  * without using temporary variables  */ #include <stdio.h> /*  * swaping values two variables using arithmetic  * operators  */ void swap(int *x, int *y) {   *x = *x + *y;   *y = *x - *y;   *x = *x - *y; } /*  * swaping values of variables using  * XOR oprations  */ void swap_xor(int *x, int *y) {   *x = *x ^ *y;   *y = *x ^ *y;   *x = *x ^ *y; } int main() {  int x, y, a, b;  x=20;  y=30;  swap(&x, &y);  printf("\nafter swap x=%d and y=%d", x, y);  a=50;  b=100;  swap_xor(&a, &b);  printf("\nafter swap a=%d and b=%d\n", a, b); }