Macro-Based Register Config Helper

Code

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

// Define macros here
#define ENABLE  0
#define MODE  1
#define SPEED  3

uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // Use macros to set fields
    uint16_t result = 0x00;
    //set from bit position 0
    result |= (enable << ENABLE);

    //set from bit position 1-2
    result |= (mode << MODE);

    //set from bit position 3-5
    result |= (speed << SPEED);
    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