Macro-Based Register Config Helper

Code

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

// Define macros here
#define REG_EN_Pos   0
#define REG_MODE     1
#define REG_SPEED    3


uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    
    uint16_t packed_num = 0;

    packed_num |= (enable << REG_EN_Pos);
    packed_num |= (mode << REG_MODE);
    packed_num |= (speed << REG_SPEED);

    return packed_num;
}

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