Macro-Based Register Config Helper

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

// Define macros here


uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    
    // uint16_t reg = 0;
     uint16_t out = 0;
    
    // reg |= enable;
    
    // out |= reg;

    // reg =0;
    // reg |= mode;
    // reg = reg << 1;
    // out |= reg;

    // reg = 0;
    // reg |= speed;
    // reg = reg << 3;
    // out |= reg;

    out |= (enable & 0x01);
    out |= (mode  &0x03)<<1;  
    out |= (speed & 0x07)<<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;
}