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

Battleship game, Create a program to print a battleship grid to the console...

Create a program to print a battleship grid to the console and mark squares as destroyed

I need p2p video streaming, Project Description: P2P media streaming bro...

Project Description: P2P media streaming browser (IE, Chrome, Firefox) plug-in needed that is compatible with Win Xp,7,8 that is Windows Firewall friendly Example like Swarm

Do friends break encapsulation?, A: No. If they're utilized properly, they ...

A: No. If they're utilized properly, they increase encapsulation. You frequently require splitting a class in half while the two halves will have distinct numbers of instances o

Area under the curve, Write a c++ program to find the area under the curve ...

Write a c++ program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points c

Explain static variables, Static Variables Static variables have the si...

Static Variables Static variables have the similar scope s automatic variables, but, unlike automatic variables, static variables retain their values over number of function ca

Define the data type qualifiers in c language, Define the Data Type Qualifi...

Define the Data Type Qualifiers in c Language? 1. const 2. volatile const: The const qualifier is used to tell C that the variable value can't change after initialization.

Explain about the unions, Explain what are Unions? The Unions like as s...

Explain what are Unions? The Unions like as structures, contain members whose individual data types may perhaps differ from one another. Though the members that create a union

Describe faster ++i or i++, A: The answer to this lies actually, how they u...

A: The answer to this lies actually, how they used. Along ++i(PreIncrement) the variable is incremented and new value is returned. Thus it needs one instruction to increment the va

Operation on array - c program, Operation on array: void Array::add( O...

Operation on array: void Array::add( Object& toAdd ) {     lastElementIndex++;     while( ptrAt( lastElementIndex ) != ZERO &&            lastElementIndex

What are the different steps in executing a c program, Question 1 What are...

Question 1 What are the different steps in executing a C program? Explain Question 2 What are the commonly used input/output functions in C? How are they accessed?

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