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

Create cpp code for identify objects and their relationships, You are setti...

You are setting up an information system for a DVD Rental Company called Box office. The new system need to hold information about customers and DVDs rentals, payments and fines. C

What if one can''t wrap the local in an artificial block?, What if one can'...

What if one can''t wrap the local in an artificial block?

Decode the Code, Smugglers are becoming very smart day by day. Now they hav...

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

Write a program to act as an electronic safe, Write a program to act as an ...

Write a program to act as an electronic safe. If the correct code has been entered the program should display "Safe Open".  If an incorrect code is input it should display "Alarm"

Area under curve, Write a program to find the area under the curve y = f(x)...

Write a 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 can b

Define the category of function - computer programming, Define the Category...

Define the Category of Function? A function, depending on whether arguments or parameters are present or not and whether a value returned or not, may belong to one of the foll

Explain object conversions, Object Conversions Just like initialization...

Object Conversions Just like initialization, conversions are also done automatically when an object of a derived class is assigned to an object of the base class. Though, the c

Static data meber and const data meber, can we use const data member in sta...

can we use const data member in static. member function with example.

Write a code to implement the base and derived class, Study the given hiera...

Study the given hierarchical class diagram and additional information, and answer the questions that follow: Sale Company: string unitPrice: double

Why are all header files not declared in every c program, Why are all heade...

Why are all header files not declared in every C program? - Declaring all header files in each program would result in increase in overall file size and load of the program. It

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