c/c++:c++ pseudo function

C + + pseudo function:

The so-called pseudo-function means that it is not a real function, but a class or a struct.

<span style= "FONT-SIZE:18PX;" > #include <iostream>void say_hello () {    std::cout << "Hello world!" << Std::endl;} Class Hello{public:    void Operator () () {         std::cout << "Hello cpp!" << Std::endl;    } overloaded operator ();}; int main () {    Say_hello ();    Hello p;    P ();    return 0;} </span>

Like the Say_hello () call in code is the function call we normally use, and we use the p defined by Hello,

and then P (), which is what we call pseudo-functions. What are the benefits or advantages of pseudo-functions?

Its advantage is that it can be passed. As defined by Hello, it is like a variable,

Convenient, and can also be called by other classes. This is not the normal function that we normally write.

c/c++:c++ pseudo function