Macro-Based Register Config Helper

Code

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

// Define macros here
#define ENABLE 0b0|enable
#define MODE mode<<1
#define SPEED speed<<3

uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    uint16_t result=0b00000000;
    result|=ENABLE;
    if(mode) 
    result|= MODE;
    if(speed)
    result|= SPEED;
    result=result&0b00111111;
    return result;
}
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