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

Described overriding?, In order to override a method, a subclass of the cla...

In order to override a method, a subclass of the class which originally declared the method have to declare a method along with the same name, return type (or a subclass of that re

Add the two complex no.s given by user - c++ program, THIS PROGRAM IS TO AD...

THIS PROGRAM IS TO ADD THE TWO COMPLEX NO.S GIVEN BY THE USER  */ #include #include #include struct complex     {     int real;     int imag;     }; void main()  {  clrs

Introduction to c, All languages are divided into six sections: - variables...

All languages are divided into six sections: - variables, I/O maths, conditional expressions, arrays, functions, subroutines and file handlers. Learning a software language is simi

C, A palindrome is a string that reads the same from both the ends. Given a...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Class, array of class objects and single inheritance

array of class objects and single inheritance

Tool for checking memeory leak, what would be the best tool for debuggingg ...

what would be the best tool for debuggingg memory leaks in c/c++ programming

Calculating interest, The interest charged on a loan banking facility is ca...

The interest charged on a loan banking facility is calculated based on principal amount, rate and time. implement a C program that can be used to automate the calculation of the in

E^x, Write a program to calculate e^x using the formula: e^x = 1 + x/1! + ...

Write a program to calculate e^x using the formula: e^x = 1 + x/1! + x^2/2! + x^3/3! + ...... Allow the user to enter the integer number x, then do the calculation in a loop (for

Explain multidimensional arrays, Multidimensional Arrays - Every dimens...

Multidimensional Arrays - Every dimension is specified in separate brackets e.g. int arr[4][3]; This is a two-dimensional array with 4 as row dimension and 3 as

Program for function in cpp, Question Write a program using c++ for the...

Question Write a program using c++ for the above function , at a= 1000, b=10 -3 ,10 -2 ,10 -4

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