Explain the scope resolution operator, C/C++ Programming

Assignment Help:

The Scope Resolution Operator( :: )

Global variables are explained outside any functions and thus can be used by all the functions defined thereafter. However, if a global variable is declared with the similar name as that of a local variable of a function , the local variable is the one in the scope when the program implements that function . The C++ language provides the scope resolution operator ( :: ) to access the global variable thus overriding a local variable with the similar name. This operator is prefixed to the name of the global variable . The following example shows its usage.

                int global = 10;

                void main()

                 {

                                int global = 20;

 

                                printf(" Just writing global prints : %d\n", global);  

printf(" Writing ::global prints : %d\n", ::global);  

 }

The output of this program will be:

 Just writing global prints : 20  

 Writing ::global prints    : 10

 

 


Related Discussions:- Explain the scope resolution operator

Asdas, Ask question #Miniasdasmum 100 words accepted#

Ask question #Miniasdasmum 100 words accepted#

Assignmet, I have a assignment deadline is 11.11.2015 can I get help

I have a assignment deadline is 11.11.2015 can I get help

How to use http headers inside php, How to use HTTP Headers inside PHP? Wri...

How to use HTTP Headers inside PHP? Write the statement through which it can be added? HTTP headers can be used in PHP by redirection that is written as: Headers can be

C++ programming, I need help programing this... In this exercise, you will ...

I need help programing this... In this exercise, you will create a program for the sales manager at Computer Haven, a small business that offers motivational seminars to local comp

Prepare a script for providing instagram followers, Prepare a script for pr...

Prepare a script for providing Instagram Followers/Likes I need to prepare a panel where my customer able to get Instagram followers or likes automatically. - A panel where I

What are pre-processor directives, What are pre-processor directives? -...

What are pre-processor directives? - Pre-processor directives are placed at the beginning of a C program. They begin with # symbol. - This is the place, where library files

Polishing game, Byteland county is very famous for luminous jewels. Luminou...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

If one won''t explicitly call the destructor of a local then , if one won't...

if one won't explicitly call the destructor of a local; then how does he handle the above situation?

Explain hiding overloaded functions, Hiding overloaded functions We can...

Hiding overloaded functions We cannot overload a base class function by redefining it in a derived class with a dissimilar argument list. Consider examples to see if similar fu

Inverted Index Implementation, Need help finishing my homework. It''s been ...

Need help finishing my homework. It''s been 5 years since I''ve use C++. I am a VN.Net programmer. -Todd

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd