Macro-Based Register Config Helper

Code

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

// Define macros here
#define EN(reg,val ,pos) reg|= (val<<pos)
#define MODE(reg,val,pos) reg|= (val<<pos)
#define SPEED (reg,val,pos) reg|= (val<<pos)
uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // Use macros to set fields
    uint16_t Register =0;
    Register = EN(Register,enable,0);
      Register = EN(Register,mode,1);
        Register = EN(Register,speed,3);

    return Register;
}

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