Swapping without using a temporary variable in C - Addition & Subtraction

swap_add_mul.c

/**
  * Swapping without using a temporary variable in C
  * (Addition & Subtraction)
  **/

#include<stdio.h>

int main(void)
{
  int a = 5, b = 10;

  printf("Initially, a = %d and b = %d\n", a, b);

  a = a + b;
  b = a - b;
  a = a - b;

  printf("After swapping, a = %d and b = %d\n", a, b);

  return 0;
}