Swap two numbers without using temporary variable

1st method(using arithmetic operators) :-

#include <stdio.h>

int main()

{

  int x = 10, y = 5;

  x = x + y;  // x is now 15

  y = x - y;  // y is 10

  x = x - y;  // and swapped, x is 5

 printf("swapped values :- x is %d, y is %d", x, y);

   

 return 0;

}

2nd method(using Bitwise XOR) :-

#include <stdio.h>

int main()

{

  int x = 10, y = 5;

  x = x ^ y;  // x is now 15(1111)

  y = y ^ x;  // y is 10(1010)

  x = x ^ y;  // and swapped, x is 5(0101)

  printf("swapped values :- x is %d, y is %d", x, y);

  return 0;

}