Different tricks to swap number

1) swapping using temporary variable

#include <stdio.h>

 

int main()

{

   int x, y, temp;

 

   printf("Enter the value of x and y\n");

   scanf("%d%d", &x, &y);

 

   printf("Before Swapping\nx = %d\ny = %d\n",x,y);

 

   temp = x;

   x    = y;

   y    = temp;

 

   printf("After Swapping\nx = %d\ny = %d\n",x,y);

 

   return 0;

}

2) Swapping using addition and subtraction

#include <stdio.h>

 

int main()

{

   int a, b;

 

   printf("Enter two integers to swap\n");

   scanf("%d%d", &a, &b);

 

   a = a + b;

   b = a - b;

   a = a - b;

 

   printf("a = %d\nb = %d\n",a,b);

   return 0;

}

3) Swapping using xor

#include <stdio.h>

 

int main()

{

  int x, y;

 

  scanf("%d%d", &x, &y);

 

  printf("x = %d\ny = %d\n", x, y);

 

  x = x ^ y;

  y = x ^ y;

  x = x ^ y;

 

  printf("x = %d\ny = %d\n", x, y);

 

  return 0;

}