Write examples of declarations of external variables, Computer Engineering

Assignment Help:

Examples of declarations of external variables  that  are  not definitions:

extern char stack[10];

extern int stkptr;

These declarations tell the compiler that the variables stack[] and stkptr are defined elsewhere, usually in some other file. If the keyword extern were omitted, the variables would be considered to be new ones and memory would be allocated for them. Remember, access to the same external variable defined in another file is possible only if the keyword extern is used in the declaration.

/* File : ext.c

This example shows reference to an external variable in more than one file. The program is organized in three files. The external variable 'a1' is defined in 'ext.c', and it is declared as extern in 'FILE3.c' */

 

 


Related Discussions:- Write examples of declarations of external variables

Computer to computer transmission of structured data, Computer to computer ...

Computer to computer transmission of structured data using standardised documentation is known as Electronic data interchange (EDI).

What do you mean by inline function, The idea behind inline functions is to...

The idea behind inline functions is to insert the code of a known function at the point where the function is called. If done carefully, this can improve the application's performa

Determine about the locator devices, Determine about the Locator Devices ...

Determine about the Locator Devices Mouse  A mouse is small hand-held box used to position the screen cursor. Wheels or rollers on the bottom of the mouse can be used to r

Examples of artificial neural networks, Examples of artificial neural netwo...

Examples of artificial neural networks: Now here as an example consider a ANN that has been trained to learn the following rule categorising the brightness of 2x2 black and wh

Process of interaction design, This unit starts by discussing the importanc...

This unit starts by discussing the importance of involving users in the interaction design process, explaining the reasons why user involvement can be useful, the different degrees

Develop inventory management system and time-tabling systems, Problem: ...

Problem: Develop three sub-systems namely Staff Profiling System, Inventory Management System and Time-tabling systems. (a) Show about any three design patterns you have us

What are types of applets, There are two different parts of applets. Truste...

There are two different parts of applets. Trusted Applets and Untrusted applets. Trusted Applets are applets with predefined security and Untrusted Applets are applets without any

What do youe mean of quality of service, Quality of Service: This is asses...

Quality of Service: This is assessed on the basis of customer's satisfaction.

Multithreaded architecture, Q. Multithreaded Architecture? It is clear ...

Q. Multithreaded Architecture? It is clear at the moment if we provide a lot of contexts to multiple threads then processors with numerous contexts are known as multithreaded s

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