What will this output?

What will this program output?
Good luck, you'll need it!

#include <iostream>
using namespace std;

int main() {
class c {
public:
c() {
void f();
f();
}
};

c my_c();
}

void f() {
cout << "VALID C++" << endl;
}

The answer is absolutely nothing because c my_c(); is a fucking function declaration.

>>18
The academics claim you need "infinite" lookahead to parse those correctly, because there can be arbitrarily many tokens before it knows which path to take. Bullshit. All you need to do is "fork" the current thread whenever there are multiple matches and feed the incoming tokens to all the active "threads", and when one can't proceed any further, it terminates. If there are no more threads, that's an error.
So, infinite lookahead.