Write a program to swap two numbers without using third variable.

#include <stdio.h> int main() {   int x = 10, y = 5;   // Code to swap 'x' and 'y'   x = x + y;  // x now becomes 15   y = x - y;  // y becomes 10   x = x - y;  // x becomes 5   printf("After Swapping: x = %d, y = %d", x, y);   return 0; }

Output :

After Swapping: x = 5, y = 10