Define external storage class - computer programming, C/C++ Programming

Assignment Help:

Define External Storage Class - computer programming?

When a variable is declared outside a function the storage is permanently assigned to it and its storage class is 'extern' and a declaration for an external variable can look just the name as a local variable declaration. Such a variable is considered to be as global to all functions declared later than and upon exit from the function or block, the external variable remains in existence. These variables are able to be accessed by any function in the program.

Illustration is

extern int a=1, b=2;

The External variables never disappear because they exist throughout the execution life of the program and they can be used to transmit value across functions. They may be unseen if the identifier is redefined.

All the functions have external storage class. This signifies that the key word extern can be used in function prototypes and in function definitions. 


Related Discussions:- Define external storage class - computer programming

Want a scraping program created, Want a scraping program created Project...

Want a scraping program created Project Description: We need to hire a professional developer to scrape the site for information such as *product title *Product Price

How to write a function template, How to write a function template A fu...

How to write a function template A function template should be written at the beginning of the program in the global area, or you may place it into a header file. All function

How can one "reopen" std::cin & std::cout in binary mode?, A: It is impleme...

A: It is implementation dependent. Verify with your compiler's documentation. For instance, assume you wish to do binary I/O using std::cin & std::cout. Unluckily there is no st

Prepare windows shell extension, Prepare Windows Shell Extension Project...

Prepare Windows Shell Extension Project Description: Skills required are C++ Programming, Windows Desktop, Windows API

Define polymorphism?, Define Polymorphism? A: Polymorphism let a client ...

Define Polymorphism? A: Polymorphism let a client to treat di_erent objects in the simialr way even if they were developed from di_erent classes and exhibit di_erent behaviors.

C program for bernoulli''s equation, i need a detailed c program to explain...

i need a detailed c program to explain the parameters of bernoulli''s equation..

Define enumeration in computer programming, Define Enumeration in Computer ...

Define Enumeration in Computer Programming? Enumerated types enclose a list of constants that are able to be addressed in integer values. We can declare variables and types

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