Keep Only the Highest Set Bit

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

// Complete the function
uint16_t highest_set_bit(uint16_t n) {
   if (n == 0) return 0;
    n |= (n >> 1);
    n |= (n >> 2);
    n |= (n >> 4);
    n |= (n >> 8);

    return n - (n >> 1);

}

int main() {
    uint16_t n;
    scanf("%hu", &n);

    uint16_t result = highest_set_bit(n);
    printf("%hu", result);
    return 0;
}