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

Super ascii string cost, want the codings for these topic in ur experts min...

want the codings for these topic in ur experts minds.com

Explain the type conversion in expressions in c language, Explain The Type ...

Explain The Type Conversion in Expressions in c language? When variables and constants of different types are used in an expression they are all converted to same type. The com

Solution, Damjibhai and Shamjibhai are two jeweler friends. They decide to ...

Damjibhai and Shamjibhai are two jeweler friends. They decide to play a simple game. The game comprises of removing the jewels for polishing, turn by turn. Once a jewel is removed

Flow chart, given number is prime or not

given number is prime or not

Main-elipse -vector-arrays in cpp , Unlike C++, other programming languages...

Unlike C++, other programming languages have associative arrays that allow array indices to be strings instead of just integers. You are to create a template class, SVector, that i

Explain the for loop - computer programming, Explain the For Loop - Compute...

Explain the For Loop - Computer Programming? Similar to the while statement, for loop is an entry controlled loop and the code of the for loop will be executed itereatively. Th

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

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

Program to write c++ program, program to write superposition of waves using...

program to write superposition of waves using class and objects

How to define a derived class, How to define a derived class ? A singly...

How to define a derived class ? A singly inherited derived class id defined by writing : The keyword class. The name of the derived class . A single colon (:).

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