Pack Multiple Fields into a 16-bit Control Register

Code

#include <stdio.h>
#include <stdint.h>
#define MODE(mode)  ((mode & 0x07) << 0)
#define SPEED(speed)  ((speed & 0x1f) << 3)
#define STATUS(status) ((status & 0x3f) << 10)
uint16_t pack_register(uint8_t mode, uint8_t speed, uint8_t status) {
    // Your logic here
    uint16_t res =0;
    res |= MODE(mode);
    res |= SPEED(speed);
    res |= STATUS(status);
    return res;
    return 0;
}

int main() {
    uint8_t mode, speed, status;
    scanf("%hhu %hhu %hhu", &mode, &speed, &status);

    uint16_t reg = pack_register(mode, speed, status);
    printf("%u", reg);
    return 0;
}

Solving Approach