This program is for swapping two random bits

#include <stdio.h>

int swap_random(int num, int pos1, int pos2)
{
  int value_pos1 = (num >> pos1) & 1;
  int value_pos2 = (num >> pos2) & 1;

  if (value_pos1 !=value_pos2)
  {
    num = num ^ (1 <<pos1);
    num = num ^ (1 << pos2);
    return num;
  }
}

int main()
{
  int num, pos1, pos2;
  printf("\n Enter the first number : ");
  scanf("%d",&num);

  printf("\n Enter the first bit position :");
  scanf("%d",&pos1);

  printf("\n Enter the second bit position :");
  scanf("%d",&pos2);

  int res = swap_random(num, pos1, pos2);
  printf("\n Number after swapping bit %d and bit %d is %d:\n", pos1, pos2, res);
  return 0;
}
  

Output:

Enter the first number : 16

 Enter the first bit position :4

 Enter the second bit position :2

 Number after swapping bit 4 and bit 2 is 4:

Categories: C Language