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

Real-time systems, This document is intended to help students get started w...

This document is intended to help students get started with the real-time systems (RTS) assignment. We will start on the assignment together in the laboratory. Students will then c

Determine 127.0.0.1 is which type of address, 127.0.0.1 is a? 127.0.0.1...

127.0.0.1 is a? 127.0.0.1 it is a loop-back address.

Demultiplexers, Explain briefly about demultiplexers?

Explain briefly about demultiplexers?

Explain common sub expression elimination, Explain briefly Common sub ex...

Explain briefly Common sub expression elimination of the commonly used code optimization techniques. Common sub expression elimination: In given expression as "(a+b)-(

Explain how does cpu perform read and write operation, Q. Explain how does...

Q. Explain how does CPU perform Read and Write operation on peripheral device taking suitable example in case of Synchronous Technique.

Which job is admitted to the system for processing, Jobs which are admitted...

Jobs which are admitted to the system for processing is called ? Ans. Long-term scheduling is admitted to the system for processing.

Breifly explain memory-to-memory architecture, Memory-to-Memory Architectur...

Memory-to-Memory Architecture The pipelines can access vector operands intermediate and final results straight in main memory. This necessitates the higher memory bandwidth. Fu

Poor human support - obstacle to information system, Poor human support - O...

Poor human support - Obstacle to Information System The full utility of an IS will only be realised if it is properly supported by the users. Technology is never a solution in

Write the html code to webpage to insert scrollable lists, Write the HTML c...

Write the HTML code to accomplish the web page to insert scrollable lists that will always display four entries of the list. The HTML code to accomplish the web page is given b

State about an active graphics device, State about An active graphics devic...

State about An active graphics device An active graphics device allows the user to communicate with the computer graphically. Generally, this implies that the user is supplyin

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