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

Use of a windows box, This program requires the use of a windows box, no co...

This program requires the use of a windows box, no console applications are allowed. Prepare for Christmas now.  Each year, Reindeer Gift Emporium publishes a Christmas price list

C program for function of count the interest , C Program for FUNCTION OF CO...

C Program for FUNCTION OF COUNT THE INTEREST float si(float,float,float); void main() {           float p=0,r=0,n=0,k=0;           clrscr();           printf("E

Luminous jewels, Problem : Luminous Jewels - Polishing Necklace Byteland c...

Problem : Luminous Jewels - Polishing Necklace Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of v

Summations, How do you write the code for summations

How do you write the code for summations

Described multiple inheritance(virtual inheritance)?, Described multiple in...

Described multiple inheritance(virtual inheritance)? And explain its advantages and disadvantages? A: It is the procedure in which a child can be derived from more than one pare

Minimum shelves, write a c++ program, that finds the minimum total number o...

write a c++ program, that finds the minimum total number of shelves, including the initial one, required for this loading process.

Write a constructor for a movie, Suppose we use Lists to represent a movie ...

Suppose we use Lists to represent a movie which has a title, cast and year. For example, the following list represents the movie, "Die Hardly", with the cast "Bruce Willing" and "T

Board coloring, coloring of elements in matrix form inm particular matrix.t...

coloring of elements in matrix form inm particular matrix.the color should not match with another color.

Area of curve, Write a program to find the area under the curve y = f(x) be...

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 b

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