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

Minimum shelves, Write a program that finds the minimum total number of she...

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

Make c++ program that help health visitor statistics, Pupils' heights The ...

Pupils' heights The health visitor at a school is going to measure the heights of all pupils. For each class she makes a statistics giving the number of pupils of each height and

Explain about evaluation of expression in c language, Explain about Evaluat...

Explain about Evaluation of Expression in c language? An Expressions are evaluated using an assignment statement of the form: variable = expression; The Variable is any v

C program for total & average in the array , C Program for TOTAL  & AVERA...

C Program for TOTAL  & AVERAGE IN THE ARRAY  #include stdio.h> #include conio.h> #include string.h> void main() {           int i=0,n[100],limit=0,a=0;

Program to display the greatest common divisor , Many modern cryptography a...

Many modern cryptography algorithms require two numbers that are coprime, or sometimes referred to as relatively prime. Two numbers are coprime if their greatest common divisor is

, Question 1 / 1 You have an N x N chessboard and you wish to place N king...

Question 1 / 1 You have an N x N chessboard and you wish to place N kings on it. Each row and column should contain exactly one king, and no two kings should attack each other (two

Write a program for calculating value of an integer, Write a Program for Ca...

Write a Program for Calculating Value of an Integer? For a clear understanding of recursive function we shall see an illustration for calculating value of an integer. main() {

Describe about the container class, Describe about the container class. ...

Describe about the container class. -Class to hold objects in external storage or memory. It acts as a generic holder. - It has a predefined behaviour and a known interface.

Program is to find the area of room, Program is to find the area of room: ...

Program is to find the area of room: Program is to find the area of room with default values using classes & object class room   {   private:     int len;     i

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