Extract Bit Field from 16-bit Register

Code

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

uint8_t extract_field(uint16_t reg) {
    // Your logic here
    uint16_t mask = (reg >> 4);         // reg right shifting 4 times 
    reg = 0;                            // reg making zero
    reg |= (mask & 0x1F);               // reg or(|) operation with mask first 5 bits

    return reg;
}

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

Solving Approach

uint8_t extract_field(uint16_t reg) {

    // Your logic here

    uint16_t mask = (reg >> 4);         // reg right shifting 4 times 

    reg = 0;                            // reg making zero

    reg |= (mask & 0x1F);               // reg or(|) operation with mask first 5 bits

    return reg;

}