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

Fill an array of randomly generated integers, The task consists of two part...

The task consists of two parts which are both preferably implemented in one source file. Towards the end of this document you will find a code skeleton that you must assume. Start

Program to calculation of mortgage interest rates, This assignment builds o...

This assignment builds on Homework 3. The two major modifications are the instruction of pointers and the calculation of mortgage interest rates. Requirements for Project 2:

#title., #quGiven the Array class definition in Fig. 11.10-11.11 (pp. 476-4...

#quGiven the Array class definition in Fig. 11.10-11.11 (pp. 476-479) of the textbook, write a new overloaded operator function for the ‘%’ (modulus) operator (i.e., return an arra

C, how to learn programming skills

how to learn programming skills

Subtraction of numbers, Two numbers to be subtracted using bitwise operatio...

Two numbers to be subtracted using bitwise operations

How can i provide printing for whole hierarchy of classes?, A: Provide a fr...

A: Provide a friend operator class Base { public: friend std::ostream& operator ... protected: virtual void printOn(std::ostream& o) const; }; inline std::ostr

Queue - c++ program, Queue - C++ program: Write a program to show the ...

Queue - C++ program: Write a program to show the basic operations on queue. namespace stack {  const int max_size = 200;  char v(max_size);  int top=0;  void pu

What happens while a derived-class object is developed, What happens while ...

What happens while a derived-class object is developed & destroyed? A: Space is allocated (on the heap or the stack) for the full object (i.e. adequate space to store the data m

Lcm code, full coding for lcm in c++

full coding for lcm in c++

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