Macro-Based Register Config Helper

Code

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

// Define macros here
#define set_enable(x) (x&0x01);
#define set_mode(x) (x&0x03)<<1;
#define set_speed(x) (x&0x07)<<3;

uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // Use macros to set fields

     uint16_t reg=0;
     reg|=set_enable(enable);
     reg|=set_mode(mode);
     reg|=set_speed(speed);

     return reg;
    
    return 0;
}

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