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 dangling pointer?, A: A dangling pointer arises while you use the ad...

A: A dangling pointer arises while you use the address of an object after its lifetime is end. It may occur in situations such as returning addresses of automatic variables from a

Explain concept of object initialization, Object Initialization An obje...

Object Initialization An object of a derived class can be initialized to an object of a base class. If both the classes have similar data members, then no specific constructor

Write a program to illustrate array, Write a Program to illustrate Array? ...

Write a Program to illustrate Array? int x[100]; char text[80]; float temp[30]; static int marks[5]; We are able to use symbolic constants instead of expression. The valu

How do i develop a subscript operator for a matrix class?, Employ operator ...

Employ operator () instead of operator[]. While you have multiple subscripts, the cleanest way to do it is along with operator () instead of with operator[]. The reason is that

Area under curve., write a c progrm to find area under the cuve y=f(x)  ...

write a c progrm to find area under the cuve y=f(x)   #include float start_point, /* GLOBAL VARIABLES */ end_point, total_area; in

Find and print the oldest and the youngest employee, Draw a flowchart ...

Draw a flowchart for a program that allows the user to enter 20 names along with their ages and their Social Security Numbers in three parallel arrays. Programs shou

Padovan string, write a javaprogram to solve padovan string using java? ...

write a javaprogram to solve padovan string using java? program in java // aakash , suraj , prem sasi kumar kamaraj college program 1 : package test.padovanstring;

TCP, check this link: http://cactus.eas.asu.edu/partha/Teaching/430.2013/...

check this link: http://cactus.eas.asu.edu/partha/Teaching/430.2013/Project/proj-2.2013.htm

STRING, getting a palindrome using minimum replacement

getting a palindrome using minimum replacement

Programs that perform the identical recursive algorithm, Goals For this ass...

Goals For this assignment you will write programs in C and LC-3 assembly code. Both programs will perform the identical recursive algorithm. The goals of this programming assignmen

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