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

Define the data types of c language, Define the Data Types of c language? ...

Define the Data Types of c language? The C has a concept of 'data types' which are used to define a variable before its use and the definition of a variable will assign storage

C++ programming, give a program to accept and print 2_D Array

give a program to accept and print 2_D Array

We are seeking someone to search mp3 link, Project Description: We are s...

Project Description: We are seeking someone to search mp3 link form audio or m3u8 for videos. Skills required are .NET, C Programming, Engineering, C# Programming

What are source files and bytecode files, Problem : (a) What do you u...

Problem : (a) What do you understand by the term ‘constructor' in Java? Explain with an appropriate example. (b) Describe the differences between an object and a class usi

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

Strings, A string S is said to be "Super ASCII", if it contains the charact...

A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the asci

Write a program that illustrate creation of a data file, Write a Program th...

Write a Program that illustrate creation of a data file? Here is a program to generate a Fibonacci series and write it into a Data file. # include main() { FILE *fpt;

Write a program to act as an electronic safe, Write a program to act as an ...

Write a program to act as an electronic safe. If the correct code has been entered the program should display "Safe Open".  If an incorrect code is input it should display "Alarm"

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