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

Explain about the unions, Explain what are Unions? The Unions like as s...

Explain what are Unions? The Unions like as structures, contain members whose individual data types may perhaps differ from one another. Though the members that create a union

Smuggler, smugglers are becoming very smart day by day. Now they have devel...

smugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they are send

Program, Write a ‘C’ program to accept any 3 digit integer number from the ...

Write a ‘C’ program to accept any 3 digit integer number from the keyboard and display the word equivalent representation of the given number.

Stone game, A game is played with three piles of stones and two players. At...

A game is played with three piles of stones and two players. At her turn, a player removes one or more stones from the piles. However, if she takes stones from more than one pile,

Reverse digit function, how can i write reverse digit function like writing...

how can i write reverse digit function like writing 1234 and printing 4321

Arrays, how do I randomised numbers in an array?

how do I randomised numbers in an array?

Padovan sequence, write a program to generate padovan sequence in c++

write a program to generate padovan sequence in c++

Can a copy constructor admit an object of the similar class , Can a copy co...

Can a copy constructor admit an object of the similar class as parameter, rather than reference of the object?

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