Macro-Based Register Config Helper

Code

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

// Define macros here

#define SetEnable(reg,value) (reg|= (value << 0)& 0x1)
#define SetMode(reg,value)   (reg|= (value << 1)& 0x6)
#define SetSpeed(reg,value)  (reg|= (value << 3)&0x38)

uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    
    uint16_t reg = 0x0;
    SetEnable(reg,enable);
    SetMode(reg,mode);
    SetSpeed(reg,speed);
    return reg;
}

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