27. Extract Bit Field from 16-bit Register

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

#define BIT_MASK 0x1F
#define BIT_POS  4

uint8_t extract_field(uint16_t reg) {
    // Your logic here
    uint8_t bits = (reg >> BIT_POS) & BIT_MASK;
    return bits;
}

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