Macro-Based Register Config Helper

Code

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

// Define macros here

uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    uint8_t tmp_mode = mode;
    uint8_t tmp_speed = speed;
    uint16_t out = 0;
    out = out + enable + (tmp_mode << 1) + (tmp_speed << 3);
    return out;
}

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

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

Solving Approach