Explain external variables, C/C++ Programming

Assignment Help:

External Variables

Different functions of the similar program can be written in different source files and can be compiled together. The scope of a global variable is not limited to any one function, but is extended to all the functions that are explained after it is declared. Though, the scope of a global variable is limited to only those functions, which are in the same file scope. If we require to use a variable defined in another file, we can use extern to declare them.

 


Related Discussions:- Explain external variables

Define bit fields, Define Bit Fields Bit Fields permits the packing of ...

Define Bit Fields Bit Fields permits the packing of data in a structure. This is particularly useful when memory or data storage is at a premium. Usual examples: Packing

C program to demonstrate pointer to array, C program to demonstrate Pointer...

C program to demonstrate Pointer to array: void p2a(int *); void main() {                 int x=10, *a,**b;                 int arr[5];                 a=&x;//po

Function, write a function named "fact"that takes one integer arguments,ca...

write a function named "fact"that takes one integer arguments,call them "num" and returns as ..............

What are all of the implicit member functions of the class? , What are all ...

What are all of the implicit member functions of the class? Or what are all of the functions that compiler implements for us if we don't describe one? A: 1.      copy ctor

Tells the operators one can override; which operators , Q:  Tells the opera...

Q:  Tells the operators one can override; which operators should he override? A: Bottom line: don't puzzle your users. Remember the reason of operator overloading: to decreas

Give advantage of using nfs, Question: a) Give two uses of NFS. b) G...

Question: a) Give two uses of NFS. b) Give one advantage of using NFS. c) Explain the following lines as they would be interpreted in the /etc/exports file i. /usr/local

The car’s measurements are illustrated, The car’s measurements are illustra...

The car’s measurements are illustrated, using two arrays. Array 1 = {L, R, L, R, R, L, R, R, L, R, R, L, R, L, L, R, Z}

Display an array using standard input, Stage One Define the specification o...

Stage One Define the specification of the program            Add two nxm size matrices   Stage Two Divide the program up into separate modules           Input Matrix         Ad

#coding, Smugglers are becoming very smart day by day. Now they have develo...

Smugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they are send

AlgorithmS, Algorithm to find the value of the powers raised by integer

Algorithm to find the value of the powers raised by integer

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