Extract the Nibble from an 8-bit Register

Code

#include <stdio.h>

unsigned char extractNibble(unsigned char reg, int pos) {
    // Write your code here
    if (pos)
    {
        return (reg >> 4) & 0x0f; 
    }
    return reg & 0x0f; 
   
}

int main() {
    unsigned char reg;
    int pos;
    scanf("%hhu %d", &reg, &pos);
    printf("%d", extractNibble(reg, pos));
    return 0;
}




















//  if (pos == 1) 
//     {
//         return (reg >> 4) & 0xf;

//     }
//      return (reg >> 0) & 0xf;

Solving Approach