What is the output of the following code?

#include

using namespace std;

class Test $\{$

int value;

public:

Test$()$;

$\}$;

Test::Test$()\{$

value $=0$;

$\}$

int main$()\{$

Test tests$[100]$;

cour $$ tests$[4].$value $$ endl;

return $0$;

$\}$

$100$

cannot be specified

$0$

compiler error