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

Data structure, Project Description: Project is related indexing data re...

Project Description: Project is related indexing data related some data structure. I need to share all information related project later if i contact any body Skills required

Do friends break encapsulation?, A: No. If they're utilized properly, they ...

A: No. If they're utilized properly, they increase encapsulation. You frequently require splitting a class in half while the two halves will have distinct numbers of instances o

#title.digital clock, Write a program to print a digital clock which displa...

Write a program to print a digital clock which displays the time for 2 hours .

C program for sorting of numbers , C Program for SORTING OF NUMBERS   ...

C Program for SORTING OF NUMBERS   main() {           int a[20],i,j,temp,n;           clrscr();           printf("ENTER THE MAXIMUM LIMIT: ");           scan

Wap for the game hangman-using functions with txt graphics, The game of han...

The game of hangman may have originated in the Victorian era, and involves trying to guess a word by suggesting letters. The game is played as follows: A word is chosen and the pl

C program for radius of circle, C Program for RADIUS OF CIRCLE   #de...

C Program for RADIUS OF CIRCLE   #define PI 3.14159 main() {           float r,a;           clrscr();           printf("ENTER THE RADIUS OF A CIRCLE: ");

Padovan string, padovan string program 1 : package test.padovanstring; ...

padovan string program 1 : package test.padovanstring; public class PadovanString {     public int stringOccurrences(int n, String str){        if(n >= 40)     return -

#, #Write a program to find the area under the curve y = f(x) between x = a...

#Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can

Describe the oops concept - class, There are so many different concepts rel...

There are so many different concepts related with OOP (Object-oriented programming) such as: Class Object Inheritance Polymorphism Abstraction Encapsulation

Programming, write a program that can accept numbers and perform all the fo...

write a program that can accept numbers and perform all the four arithmetic operation

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