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

Which one would you prefer - a macro or a function, Which one would you pre...

Which one would you prefer - a macro or a function? Actually it depends on the purpose of program! - In case of macros, corresponding code is inserted directly into your sou

What does odbc do in context with php, What does ODBC do in context with PH...

What does ODBC do in context with PHP? PHP supports many databases such as dBase, Microsoft SQL Server, Oracle, etc. however, it also supports databases such as filePro, FrontB

Flow chart, flow chart for prime or not

flow chart for prime or not

Solve, solve for radius(R) of a circle of its area is to be inputted by a u...

solve for radius(R) of a circle of its area is to be inputted by a user. also display compute the circle diameter hint: area= pir21 pi=2.1416

Find the internal resistance of the battery, The voltage at the terminals o...

The voltage at the terminals of a battery is 52V when no load is linked and 48.8V when a load taking 80A is connected. Find the internal resistance of the battery. What wou

Change to palindrome, A palindrome is a string that reads the same from bot...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

What is union, What is Union? Intimately associated with the structure ...

What is Union? Intimately associated with the structure is the union which as well contains multiple members. Unlike a structure but the members of a union share the same stora

Explain the default constructor and destructor, The default Constructor and...

The default Constructor and Destructor If you fail to write a constructor and destructor function,  the compiler automatically supplies them for you. These functions have publi

Programming, what is the first thing I need to know about Programming?

what is the first thing I need to know about Programming?

#area under curve, #Write a program to find the area under the curve y = f(...

#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.   #include float start_poi

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