Extract Bit Field from 16-bit Register

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

uint8_t extract_field(uint16_t reg) {
    // Your logic here
    /*reg = reg >>4;
    uint16_t mask = (1ULL << 5) - 1;
    return reg & mask;*/
    return (reg >>4) & 0x1F;
  
}

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