Define scope rules of c program - computer programming, C/C++ Programming

Assignment Help:

Define Scope Rules of C program - Computer Programming?

The fundamental rule of scope is that identifiers are accessible only within the block in which they are declared and they are unknown outside the boundaries of that block.

The scope of the variable determines over what part of the program and a variable is actually available for use.

Let us see a simple instance

main()
{
int a=2; /*outer .block a*/

printf("%d\n",a); /* 2 is printed*/

{
int a=5; /*inner block a*/

printf("%d\n",a); /* 5 is printed*/

} /*back to the outer block*/

printf("%d\n",a); /* 2 is printed*/
}

Every block introduces its own nomenclature. A name of outer block is valid until an inner block redefines it. If redefined the outer block name is masked or hidden from the inner block.


Related Discussions:- Define scope rules of c program - computer programming

Decode, Problem Description Smugglers are becoming very smart day by day. N...

Problem Description 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 techn

Saha, find the minimum total number of shelves

find the minimum total number of shelves

Spaning tree , what is the function of spanning tree in graph algorithm?

what is the function of spanning tree in graph algorithm?

How does c++ help with the tradeoff of security vs.usability, A: In C, enca...

A: In C, encapsulation was completed by making things static in a compilation unit or module. It prevented another module from accessing the static stuff. (Incidentally, now static

Friend function in c++, Friend function in c++: class miles; class ...

Friend function in c++: class miles; class km  {    float value;    public :   // void input();     km convert(km  ,int a ) ;    void output()    {

Write a program read words from file, Write a program IdentyfyWordsMain.jav...

Write a program IdentyfyWordsMain.java reading a fi le (like HistoryOfProgramming) and divide the text into a sequence of words (word=sequence of letters). Save the result in a new

Luminous jewels, Problem : Luminous Jewels - Polishing Necklace Byteland c...

Problem : Luminous Jewels - Polishing Necklace Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of v

Specifying and working rules of a class, Specifying a Class: As discuss...

Specifying a Class: As discussed a class is defined to develop an algorithm and bind it together in a core shell. A class is an abstract data type (ADT).  The binding of dat

Implement mini version of linux ''tar'', I need to implement a mini version...

I need to implement a mini version of linux''s ''tar'' function in C.

Is there present a way to force new to allocate memory, Yes. "Memory pools"...

Yes. "Memory pools" are useful in many situations. The bad news is that I'll need to drag you through the mire of how it acts before we talk about all the uses. Firstly, recall

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