c/c++:c++ pseudo function

C + + pseudo function:

The so-called pseudo function. This means that it is not a real function, but rather 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>

Calls like Say_hello () in code are the function calls we use frequently. And we use Hello to define the p.

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

its strength lies in its ability to pass on. As defined by Hello, it is like a variable. Convenient.

It can also be called by other classes and members. Ordinary functions that we normally write can only rely on global variables.

c/c++:c++ pseudo function