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

Write a program to calculate the timetable, Write a program to calculate th...

Write a program to calculate the timetable for numbers 1 -> 10 and display them as follows. Your solution should use for do loops      #include stdio.h void main() {    char p

Msp, A Padovan string P(n) for a natural number n is defined as: P(0) = ‘X...

A Padovan string P(n) for a natural number n is defined as: P(0) = ‘X’ P(1) = ‘Y’ P(2) = ‘Z’ P(n) = P(n-2) + P(n-3), n>2 where + denotes string concatenation. For a string of t

Menus, create a shopping cart in c++

create a shopping cart in c++

C program, Just need the answers to the following 3 questions. "NO NEED to ...

Just need the answers to the following 3 questions. "NO NEED to write a program compile or run it, do not need it. Just need the answers for the following questions. Example quest

Using functions create a program, In rPeANUt implement the "char getchar()"...

In rPeANUt implement the "char getchar()" and "void printstring(char *str)" functions. Using these functions implement the following: void main() {    while (1) {       ch

Luminous jewels, Luminous Jewels - The Polishing Game Byteland county is v...

Luminous Jewels - The Polishing Game Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various lum

Example for external storage class - computer programming, Example for exte...

Example for external storage class - computer programming? extern double sin (double); In a function prototype, for the sin() function its function definition ~ we can write

Datastructure, c program of double linked list with full explanation

c program of double linked list with full explanation

Write a c program to input numbes in table format, Write a C program to inp...

Write a C program to input 16 numbers and print them out in a table format of 4 wide by 4 deep. E.g.   4    5    5    7   8    9    10    11   12    13    14    15   16    17

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????

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