Question

How to swap a bit at specific position in C

Answer 1

#include <stdio.h>
   
void print_bits(unsigned int n) { 
    int bit;
    for (int i = 7; i >= 0; i--) {
        bit = n >> i;
        if (bit & 1)
            printf("1");
        else
            printf("0");
    }
    printf("\n");
}

int main() 
{
    int n = 365, pos = 2;
      
    print_bits(n);
      
    n ^= (1 << pos);
      
    print_bits(n);
      
    return 0;
}
 
 
  
/*
run:
  
01101101
01101001
  
*/

 

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