Pack Multiple Fields into a 16-bit Control Register

Code

#include <stdio.h>
#include <stdint.h>
//1111 11  ii  11111  111
uint16_t pack_register(uint8_t mode, uint8_t speed, uint8_t status) {
    // Your logic here
    uint16_t reg =0;
    reg |= (mode&0x07)<<0;//111
    reg |= (speed&0x1F)<<3;//11111
    reg |= (status&0x3F)<<10;//11111
    return reg;
    //Input: mode = 3, speed = 10, status = 12
    //Output: 12371
    //(Hex: 0x3053, Binary: 0011000001010011)
}

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