Extract Bit Field from 16-bit Register

Code

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

int main() {
    uint16_t reg;
    scanf("%i", &reg);          // auto-detect hex/decimal

    uint16_t field = (reg >> 4) & 0x1F;

    printf("%u", field);
    return 0;
}

Solving Approach