Pack Multiple Fields into a 16-bit Control Register

#include <stdio.h>
#include <stdint.h>
#define MODE_MASK           0x7
#define SPEED_MASK          0x1F
#define RESERVED_MASK       0x3
#define STATUS_MASK         0x3F

#define MODE_MASK_POS       0x0
#define SPEED_MASK_POS      0x3
#define RESERVED_MASK_POS   0x8
#define STATUS_MAKS_POS     0xA
uint16_t pack_register(uint8_t mode, uint8_t speed, uint8_t status) {
    // Your logic here
    uint16_t out_reg = 0;
    out_reg |= (uint16_t)(mode & MODE_MASK) << MODE_MASK_POS;
    out_reg |= (uint16_t)(speed & SPEED_MASK) << SPEED_MASK_POS;
    out_reg &= ~((uint16_t)RESERVED_MASK << RESERVED_MASK_POS);
    out_reg |= ((uint16_t)(status & STATUS_MASK) << STATUS_MAKS_POS);
    return out_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;
}