Extract the Nibble from an 8-bit Register

Code

#include <stdio.h>

unsigned char extractNibble(unsigned char reg, int pos) {
    unsigned char nibble = 0;
    if(pos==1){
         nibble  = (reg & (0xF0)) >> 4; // beacuse we have to put the higher nibble to lower decimal value that i have used >>4 to make it easily readble and accessible
    }
    else if(pos==0){
         nibble = reg & ~(0xF0);
    }
    return nibble;
    
    
    // Write your code here
}

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

Solving Approach