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

C CODING, HOW THE C PROGRAM CODING IMPLEMENTED DY ITSELF UNDERSTANDING . AL...

HOW THE C PROGRAM CODING IMPLEMENTED DY ITSELF UNDERSTANDING . ALSO HOW I CAN A BECOME A GOOD PROGRAMMER IN C WHAT I DO FOR GOOD PROGRAMMING ,TELL ME HOW C CODING DEVELOP DY ITSELF

Program to calculate the average sales for each employee , There are 2...

There are 25 employees in a business. Each employee has 5 sales each day of the month (Assume there are 30 days in each month of the year). Draw a flowchart for a pr

#title prime number or not, to find prime numbers upto any number say "n" e...

to find prime numbers upto any number say "n" entered by user

What is difference among macro and template?, A: In C++ there is a main dif...

A: In C++ there is a main difference among a template and a macro. Merely a macro is a string which the compiler replaces along with the value that was defined. For example #define

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?

HASH., Define hash functions. Explain the Division method, Mid square metho...

Define hash functions. Explain the Division method, Mid square method and Folding method of hash functions.

Simple object-oriented program, This assignment is to be undertaken individ...

This assignment is to be undertaken individually - no group work is permitted. Background information This assignment is an exercise in simple object-oriented programming and, acco

However shouldn''t i always use a printon() method instead , Q: however sho...

Q: however shouldn't I always use a printOn() method instead of a friend function? A: No. The usual cause people wish to always use a printOn() method instead of  a friend fu

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