Macro-Based Register Config Helper

Code

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

// Define macros here
#define ENABLE ((uint8_t)0x01)
#define MODE ((uint8_t)0x06)
#define SPEED ((uint8_t)0x38)
#define RESERVED ((uint8_t)0xC0)
uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // Use macros to set fields
    uint16_t reg=0x0000;
    reg |=enable;
    reg |=(mode << 1);
    reg |=(speed << 3);
    
    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