Shulou(Shulou.com)06/02 Report--

Today, I'm going to talk to you about how C++ uses overloading operator () to form a copycat function. Maybe many people don't know much about it. In order to make you understand better, the editor summarizes the following for you. I hope you can get something according to this article.

/ *

* functor is something that works like a function.

* if operator () is overloaded on a class, it becomes a mock function.

, /

# include

Using namespace std

Template

Class my_plus

{

Public:

T operator () (const T & x, const T & y) const

{

Return x + y

}

}

Template

Class my_minus

{

Public:

T operator () (const T & x, const T & y) const

{

Return x-y

}

}

Int main ()

{

My_minus

MinusObj

Cout

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