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

Described smart pointer?, A: A smart pointer is a C++ class which mimics a ...

A: A smart pointer is a C++ class which mimics a regular pointer in syntax and some semantics, however it does more. Since smart pointers to distinct types of objects tend to have

Least coast method, Find out initial basic feasible solution for the given ...

Find out initial basic feasible solution for the given transportation problem using Least Cost Method (LCM).

Tree, Ask question #M i want to undersatnd about tree structures like node ...

Ask question #M i want to undersatnd about tree structures like node leaf etcinimum 100 words accepted#

Cin, how we use the cin command and why we use this command????

how we use the cin command and why we use this command????

Bouncing Ball, Create an applet that bounces a blue ball inside an applet u...

Create an applet that bounces a blue ball inside an applet using Thread. The ball (diameter is 10) will start at position (0,0). When the ball hits the edge of the applet, the ba

What are the differences among a struct in c & in c++?, A: In C++ a struct ...

A: In C++ a struct is alike to a class except for the default access specifier( refer to other question in the document). In C we ought to include the struct keyword while declarin

C program for sorting of long word with one string, C Program for SORTING O...

C Program for SORTING OF LONG WORD WITH ONE STRING #include stdio.h> #include conio.h> #include string.h> void main() {           char n[50],c[25][25];

Diploma in IT, Function fact explain how the process of recursion works in ...

Function fact explain how the process of recursion works in C++.In your answer assume that the function is called to calculate the factorial of 6?

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