17. Extract the Nibble from an 8-bit Register

#include <stdio.h>

unsigned char extractNibble(unsigned char reg, int pos) {
    // Write your code here
    if(pos){
        // printf("even12 %b\n",reg);
        reg=(((reg>>4) & 0x0F));
        //printf("even %b\n",reg);
        return reg;
    }else{
        reg =(reg & 0x0F);
       /// printf("odd:- %b\n",reg);
        return reg;
    }
}

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