Extract the Nibble from an 8-bit Register

Code

#include <stdio.h>

unsigned char extractNibble(unsigned char reg, int pos) {
    // Write your code here
    // unsigned char out; 
    if (!pos){
        reg &= (0x0F);
    }else {
        reg &= (0xF0) >> 4;
    }
    
    return reg; 
}

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

Solving Approach

I did bitwise AND operation with a mask. If position is MSB, i moved the MSB to LSB using shift operator >>4.