Extract Bit Field from 16-bit Register

Code

#include <stdio.h>
#include <stdint.h>

uint8_t extract_field(uint16_t reg){
    return (reg >> 4) & 0x1F;
}

int main(){
    uint16_t reg;
    scanf("%hx", &reg);
    printf("%hhu", extract_field(reg));
    return 0;
}

Solving Approach