25. Pack Multiple Fields into a 16-bit Control Register

#include <stdio.h>
#include <stdint.h>
// define macros
#define Mode(x)  ((x&0x7)<<0);
#define speed(x)  ((x&0x1f)<<3);
#define status(x)  ((x&0x3f)<<10);
uint16_t pack_register(uint8_t mode, uint8_t speed, uint8_t status) {
    // Your logic here
    uint16_t reg=0;

    reg|=Mode(mode);
    reg|=speed(speed);
    reg|=status(status);
    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;
}