Anyone guess the output without running the code?

Question

#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{
int num=1;
while (num< 100)
{
num=num*3;
cout << num <<endl;
num++;
}
return 0;

}

Answer 1

Why?

Answer 2

I got answer but it is not as expected Simon Sauter

Answer 3

What do you get and what did you expect?