Question

What does the "::" function represent in c++? Please describe how it works.

Answer 1

In C++ :: is termed as the scope resolution operator. It has the following vert crucial and important functions to perform:

1) It enables a function to be defined outside the class.

We consider the following code snippet:

class MyClass

{

public:

void Demo(); //We declare the function Demo in class

};

void Demo::MyClass();

{

//statements

}

//Here we declared the function Demo outside the main class. This is done using the scope resolution operator.

2) It enables us to access those variables of a class which are declared as static

3) In cases of conflicts, when we have a local and a global variable both having same name, the scope resolution operator distinguishes between them both