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

C++, #include long BixFunction(int x, int y = 5, float z = 5) { return...

#include long BixFunction(int x, int y = 5, float z = 5) { return(++x * ++y + (int)++z); } int main() { cout return 0; }

Car rental project, I need a project on car rental system using c programmi...

I need a project on car rental system using c programming only of college level

Explain the rules for overloading an operator, Rules for overloading an ope...

Rules for overloading an operator This summarizes the most significant points you need to know in order to do operator function overloading. The only operators you may o

Employee payroll, You are to write a C++ program which will compute the gro...

You are to write a C++ program which will compute the gross pay, Social Security Tax, Income Tax and net pay for an employee. The program needs to prompt for and read the employ

Define bitwise-and operator, Define Bitwise-AND Operator: &:? The bitwi...

Define Bitwise-AND Operator: &:? The bitwise-AND operator (&) compares every bit of its first operand to the corresponding bit of its second operand. If both bits are 1 the mat

Explain redirection in c++?, Question 1 . Write a brief note on Aggregation...

Question 1 . Write a brief note on Aggregation Question 2 . Discuss briefly on constructors Question 3 . What are the important advantages of Inheritance? Question 4 .

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

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