Scope Resolution Operator In C++ | Scope Resolution Operator In C++ Programming Language | Scope Resolution Operator In C++ With Example

Scope resolution operator in C++

The scope resolution operator can be used as both unary and binary. You can use the unary scope operator if a namespace scope or global scope name is hidden by a particular declaration of an equivalent name during a block or class.The scope resolution operator to use class names or class member names.

Fig: Scope Resolution Operator In C++

Syntax:

return type class name ::

function name()

{

function of body;

}

Example:

void BCA :: display()

{

cout<<”pramod dwivedi display”;

}

 We have a global variable of name  num and a local variable of name num, to access global num , now to  use the scope resolution operator.

Program:

#include<iostream.h>

#include<conio.h>

int num=30; //global variable

void main()

int num; //local variable

cout<<”input value”;

cin>>num;

cout<<”local variable =”<<num<</n;

cout<<”global variable=”<< ::num<</n;

getch();

}

Output:

Input value 30

Local variable 30

Global variable 30