27. Extract Bit Field from 16-bit Register

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

#define OFFSET  4U
#define MASK    (0x1F<<OFFSET)
#define EXTRACT(x)  (x&MASK) 

uint8_t extract_field(uint16_t reg) {
    // Your logic here
    uint16_t temp=0;
    uint8_t val=0;
    temp = EXTRACT(reg);
    val = temp>>OFFSET;
    return val;
}

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