Pack Multiple Fields into a 16-bit Control Register

Code

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

uint16_t pack_register(uint8_t mode, uint8_t speed, uint8_t status) {
    // Your logic here
    uint16_t reg = 0;
    
    reg |= (uint16_t)(mode & 0x07); // Using a mask of 0x07 (binary 00000111) to ensure only the lower 3 bits are used

    reg |= (uint16_t)(speed & 0x1F) << 3; // Using a mask of 0x1F (binary 00011111) and shifting left by 3 bits

    
    reg |= (uint16_t)(status & 0x3F) << 10; // Using a mask of 0x3F (binary 00111111) and shifting left by 10 bits

    return reg;
}
    

int main() {
    uint8_t mode, speed, status;
    scanf("%hhu %hhu %hhu", &mode, &speed, &status);

    uint16_t reg = pack_register(mode, speed, status);
    printf("%u", reg);
    return 0;
}

Solving Approach