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

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 static member functions, Static Member Functions All the object...

Static Member Functions All the objects of the class share static data members of a class. The example above demonstrates how to keep track of all the objects of a class which

# Bank Account class, Write a C++ program to test the Bank Account class fo...

Write a C++ program to test the Bank Account class for 10 customers.

Explain the bit wise operations, Explain the Bit Wise Operations? C lan...

Explain the Bit Wise Operations? C language in particular was created to make it easier to write operating systems. The objective was to have a language that provided excellent

Create a minimum of fifteen functions, Purpose For this assignment you ...

Purpose For this assignment you will need to create either a function list or a record series for a CRCRS. Instructions Note: Complete only one of the two assignment op

Define name mangling in c++??, A: The procedure of encoding the parameter t...

A: The procedure of encoding the parameter types along with the function/method name into a unique name is called as name mangling. The inverse procedure is called demangling. F

Expression in c++, expression and its types with example programs

expression and its types with example programs

Decodethecode, 6999066263304447777077766622337778 -----> message sent by th...

6999066263304447777077766622337778 -----> message sent by the first smuggler. my name is robert---------> message decoded by the second smuggler. Where ‘0’ denotes the "space". Ex

Create binomial tree, Create a function ValueDelta(char inName[], char outN...

Create a function ValueDelta(char inName[], char outName[]) that reads a text file with option specifications and writes the option values as well as Delta. The inName[] file conta

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

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