c++: how do i call a friend template function defined inside a class?

Question

hi guys please help me with this function i got this example from my book, but i have no idea how to actually call the ticket function this is the code:

#in         


        

Answer 1

Why not make it static instead?

#include 
class Manager { 
public:
    template 
    static int ticket()  
    { 
        return ++Manager::counter; 
    } 
    static int counter; 
}; 

int main()
{
    Manager m;
    std::cout << "ticket: " << Manager::ticket() << std::endl;
}

Though really, it doesn't have to be a template either. I assume you needed information specifically about friend templates?