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

A palindrome is a string that reads the same from both the e, submitting so...

submitting solutions in C language should not use functions from / as these files do not exist in gcc

Input and output in c++, C++ improves on many of C's features and provides ...

C++ improves on many of C's features and provides object-oriented programming capabilities used for software production, quality and reusability. C++ was developed by Bjarne Strons

C programming language, write an algorithm that reads a postive integer n a...

write an algorithm that reads a postive integer n and then finds and prints the sum of all integers between 1 and n (inclusive) that are disvisible by 7. please write this using c

Palindorme, program coding for the conversion of string to a palindrome

program coding for the conversion of string to a palindrome

What is the difference among malloc/free and new/delete?, What is the diffe...

What is the difference among malloc/free and new/delete? A: Malloc/free do not know about destructors and constructors. New & delete create and destroy objects, whereas malloc &

Constructor: Copy, b) Why copy constructor accepts reference to an object a...

b) Why copy constructor accepts reference to an object and not the object itself? What happens if we do otherwise?

Described the isa and hasa class relationships. , Described the ISA and HAS...

Described the ISA and HASA class relationships. How would you apply each in a class design? A: A specialized class "is" specialization of another class and, thus, has the ISA re

201 it, overload assignment opertor to assign the data of one object to ant...

overload assignment opertor to assign the data of one object to anthor

Plugging the memory leak, Problem #1: plugging the memory leak. When you em...

Problem #1: plugging the memory leak. When you employ the "normal" new operator, for example Foo* p = new Foo(), the compiler generates some special code to manage the case while t

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