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

Want wellness software, Project Description: We are looking to have soft...

Project Description: We are looking to have software that we will use to track employee information regarding our wellness program. We would like the system to be able to follow

Define bitwise left shift and right shift operators, Define Bitwise Left Sh...

Define Bitwise Left Shift and Right Shift Operators: >? The bitwise shift operators shift their first operand right (>>) or left ( // Illustration of the bitwise right shi

Area under the curve, program area under the curve y=f(x) between x=a & y=b...

program area under the curve y=f(x) between x=a & y=b, integrate y=f(x) between the limits of a & b   Solution: #include float    start_point,            /* GLOBAL V

Recursive function, Write a recursive function recursiveMin that takes an i...

Write a recursive function recursiveMin that takes an integer array, a starting subscript and an ending subscript as arguments, and returns the smallest element in the array. The f

I want application to generate premium, Project Description: We want to ...

Project Description: We want to generate premium numbers for one of our application. What we need is: A program that generate 2, 3, 4, 5, 6, 7, 8 digits premium numbers

What is the role of && operator in a program code, What is the role of && o...

What is the role of && operator in a program code? - && is also referred to as AND operator. - When this operator is used, all conditions specified should be TRUE before nex

How private instance of a class can be assigned values, Question 1: (a)...

Question 1: (a) Explain clearly the following concepts using suitable examples of your own:- (i) concrete class v/s abstract class (ii) constructor v/s over

Functions, what is the difference between call by reference and call by poi...

what is the difference between call by reference and call by pointer method?

Define register storage class - computer programming, Define Register Stora...

Define Register Storage Class - computer programming? The Storage class register notify the compiler that the associated variables must be stored in high-speed memory register.

Program to find shortest path between two nodes, Ques.Implement a c/c++ pro...

Ques.Implement a c/c++ program to find a shortest path between two nodes in a network?network should be taken as an adjacency matrix.

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