Return in not 0

Question

I programed in code::blocks and everything was fine, so I tried to do the same thing on android in app Cppdroid (it's my first time with that app) and after something called "complying" I got error and I have no idea what to do. Here's my code:

#include <iostream>
using namespace std ;
int main()
{
int a=2;
cout << a;
return 0;
}

Answer 1

Still error :/