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

Define the return statement in computer programming, Define The Return Stat...

Define The Return Statement in Computer Programming? The return statement is used for two purposes once the return statement is executed the program control will be immediately

Write a procedure to add and subtract-money, Money is immutable and is asso...

Money is immutable and is associated with a currency. When two money entities are added or subtracted be sure to consider currency conversion. You must create a money object result

ASCII, A string S is said to be "Super ASCII", if it contains the character...

A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the asci

How to implement tr- 069 protocol, Description - The TR-069 CPE WAN Managem...

Description - The TR-069 CPE WAN Management Protocol (CWMP) is a protocol that was created by the Broadband Forum (formally the DSL Forum) which sets out a common method for CPE de

Logic families and lsi devices, We have used logic symbols in the past, but...

We have used logic symbols in the past, but not really though about the actual real devices. Semiconductor companies have taken the logic symbols are manufactured them into logic f

Explain the break statement, The break statement The break statement, w...

The break statement The break statement, which was already covered in the switch.. case, can also be used in the loops. When a loop statement is encountered in the loops the co

What is the issue which auto_ptr objects address?, A: If you employ auto_pt...

A: If you employ auto_ptr objects you would not need to be concerned along with heap objects not being deleted even if the exception is thrown.

Program to display stock containing item code, THIS PROGRAM IS TO DISPLAY A...

THIS PROGRAM IS TO DISPLAY A STOCK CONTAINING ITEM CODE,ITEM NAME,PRICE AND ANOTHER STOCK WITH CODE & QUANTITY AND DISPLAY COMPLETE INFORMATION #include #include #include

C , why c is middle level language?

why c is middle level language?

Luminous jewels polishing game, Luminous Jewels - The Polishing Game Bytel...

Luminous Jewels - The Polishing Game Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various lum

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