27. Extract Bit Field from 16-bit Register

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

uint8_t extract_field(uint16_t reg) {
    // Your logic here
    uint16_t mask = ((1U << 5) - 1) << 4;
    uint16_t temp;
    temp = reg;
    temp &= mask;
    temp = temp >> 4;
    return temp;
    
}

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