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

Write a fragment of code that declares a variable, (a) Write a fragment of ...

(a) Write a fragment of code that declares a variable colSp of type ColourSpot, and then moves it to the point (3, -4), and sets its colour to Green. (b) A function QU8 is speci

Tool for checking memeory leak, what would be the best tool for debuggingg ...

what would be the best tool for debuggingg memory leaks in c/c++ programming

multithreaded server, Implement a multithreaded server that can be used as...

Implement a multithreaded server that can be used as a proxy server to access some designated file (say it reflects the proxy copy of two file1.txt, file2.txt). Now use a client to

I need voting bot, Project Description: Seeking a Voting Bot Script / Pr...

Project Description: Seeking a Voting Bot Script / Program Skills required are ASP, Javascript, C Programming, PHP, Software Architecture

Palindrome, A palindrome is a string that reads the same from both the ends...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

How do i develop a subscript operator for a matrix class?, Employ operator ...

Employ operator () instead of operator[]. While you have multiple subscripts, the cleanest way to do it is along with operator () instead of with operator[]. The reason is that

Psudo code for interrupt handler , The rPeANUt simulator provides buffering...

The rPeANUt simulator provides buffering of the characters that are typed into the terminal. However, this would generally not be the case so if the program did not consume a chara

Program is to read the characters from keyboard, Program is to read the cha...

Program is to read the characters from keyboard: Program is to read the characters from keyboard one by one stored in different files as upper constants, lower constants, othe

Palindrome, A palindrome is a string that reads the same from both the ends...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

C++ multiplayer game programming project, C++ Multiplayer Game Programming ...

C++ Multiplayer Game Programming Project Project Description: We are seeking an experienced C++ Game Programmer to enhance clientside related aspects of MCS: Mars City Securi

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