27. Extract Bit Field from 16-bit Register

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

uint8_t extract_field(uint16_t reg) {
    // Your logic here
    uint8_t extract_value ;
    extract_value = (reg>>4)&0xff;
    for(uint8_t i=5;i<8 ;i++)
    {
        extract_value &= ~(1<<i);
    }

    return extract_value;
}

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