Cout is defined in iostream. Include it and either call it with the std namespace.
Example: std::cout << "Test" << std::endl
Or state that you'll be using the namespace so you don't have to use the std:: all the time.
Example: using namespace std;
Now go learn C++.
Example: std::cout << "Test" << std::endl
Or state that you'll be using the namespace so you don't have to use the std:: all the time.
Example: using namespace std;
Now go learn C++.