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 reg1 = reg;
    uint8_t mask= 0;
     mask = 1 << 5;
    mask = mask - 1; 
    // reg1 &= ~( mas<< 4);
    // reg1 = reg1 | ()
    reg = (reg >> 4)&(mask);
    return reg;
}

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