115. Print Binary Representation of an 8-bit or 16-bit Value

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

void print_binary(uint16_t val) {
    // Your logic here
    union {
        uint16_t val;
        uint8_t bytes[2];
    } val_fields;
    
    val_fields.val = val;    
    uint8_t len = 8;
    uint16_t mask = 0x0080;

    if (val_fields.bytes[1] != 0x00)
    {
        mask = 0x8000;
        len = 16;        
    }

    
    for (int i = 0; i < len; i++) {        
        printf("%d", (val & mask) ? 1 : 0);
                
        mask >>= 1;
    }
}

int main() {
    uint16_t val;
    scanf("%hu", &val);
    print_binary(val);
    return 0;
}