How do you get the best move from alpha-beta, instead of just a score?

It says it failed to run the engine. The engine does not even get the chance to identify itself. Maybe there are some "standard setup file" avaible or something.

I am trying to program an UCI engine, but the setup fails. Below is a part of the function setting up the engine.


void Proxy::receiveMessage()
{
while (std::getline (std::cin, input ))
{
if(input == "uci")
{
cout << input << "\n";
message << input << endl;
};

}
}



What is wrong?