#include <stdio.h>
#include <stdlib.h>

typedef int bool;
#define true 1
#define false 0 

bool isPowerOfTwo(int n){
    int count = 0;
    while (n > 0) {
        count += n & 1;
        n >>= 1;
    }
    return count == 1;
}

int main() {
    printf("Expected: true\n");
    printf("Got: %s\n", isPowerOfTwo(16) ? "true" : "false");
    return 0;
}