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

Left in the lurch, Hey vrcoder I have got similar way but the game builder ...

Hey vrcoder I have got similar way but the game builder has sent me the game unfinished and left. I saw it on a link on line but they have wiped the old message with the link in it

Beginning C++ Through Game Progammin, you are to create a text adventure ga...

you are to create a text adventure game that uses pointers. You have a rich, eccentric Uncle Billy who is soon to be deceased. How soon.....oops......he''s gone. He has left yo

How many non-boundary pits and peaks are on the map, Armed with your functi...

Armed with your function from above, we can do some interesting things. For instance, any pixel where the offsets are both zero is a pit (lower than all surrounding points) .

Private member functions, P r i va t e Member Functions: A private...

P r i va t e Member Functions: A private member functions can be called by the members of the same class.  Consider the following example.   c l a ss sample

C and Data structure, Implement multiple stacks in a single dimensional arr...

Implement multiple stacks in a single dimensional array using c.

Flight Departure in C, I really have a hard time analyzing how to write a c...

I really have a hard time analyzing how to write a code in C. It''s all bout Time Departure and we must used a 24 hour clock. Can u help me?

Program for construct a struct - user defined data type, Define a user-defi...

Define a user-defined data type (struct) called Car to represent a car in the context of a car dealership database. Car must have at least the following characteristics: Make Model

Logical operators, how can i make a program with !(not) operator

how can i make a program with !(not) operator

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