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

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

void print_binary(uint16_t val) {
    uint8_t len = val <= 255 ? 8: 16;

    for (int i=0; i<len; i++) {
        uint8_t bit = (val>>(len-i-1)) & 1U;
        printf("%u", bit);
    }
}

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