c3867'sf::Time::as seconds':非标准语法;使用'&'创建指向成员的指针

Question

#include<SFML/Graphics.hpp>
#include<iostream>

int main() {

sf::RenderWindow Window;
Window.create(sf::VideoMode(800, 600), "Game Engine");
sf::Time time = sf::seconds(2);
std::cout << time.asSeconds << std::endl;
while (Window.isOpen()) {
    sf::Event Event;
    while (Window.pollEvent(Event))     {
        if (Event.type ==  sf::Event::Closed) {
            Window.close();
        }

        Window.display();

    }


    {

    }
}

}

1>------ Build started: Project: SFML-2.0, Configuration: Debug Win32 ------ 1> Main.cpp 1>c:\\users\\paribeshpc\\documents\\visual studio 2015\\projects\\sfml-2.0\\sfml-2.0\\main.cpp(11): error C3867: 'sf::Time::asSeconds': non-standard syntax; use '&' to create a pointer to member ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Please help me, I keep getting this error. I was learning sfml from this dued and I copied this code from him but its not working. The link to the video

Answer 1

sf::Time::asSeconds is a function , you need to call it:

std::cout << time.asSeconds() << std::endl;
//                         ^^
//      Note parentheses here

What happens right now is that the compiler thinks you want a pointer to the function, which is why it tells you to use the address-of operator & .