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

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

uint16_t pack_register(uint8_t mode, uint8_t speed, uint8_t status){
    uint16_t reg = 0;
    reg |= (mode & 0x07) << 0;  // Bits 0-2 for mode
    reg |= (speed & 0x1F) << 3; // Bits 3-7 for speed
    reg |= (status & 0x3F) << 10;// Bits 10-15 for status

    return reg;
}

int main(){
    uint8_t mode, speed, status;
    scanf("%hhu %hhu %hhu", &mode, &speed, &status);
    printf("%hu\n", pack_register(mode, speed, status));
    return 0;
}