Macro-Based Register Config Helper

Code

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

// Define macros here

uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // // Use macros to set fields
    // uint16_t reg;
    // // set enable bit
    // reg = reg|(enable << 0);
    // // set mode bit
    // reg = reg |((mode & 0x3) << 1);
    // // set speed bit
    // reg = reg | ((speed & 0x7) << 3);
    // return reg;
    return (uint16_t)((enable << 0)|((mode &0x3)<<1)|((speed & 0x7) << 3));

}

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