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

Can i employ realloc() on pointers allocated through new?, A: No.       ...

A: No.       While realloc() need to copy the allocation, this uses a bitwise copy operation, that will tear several C++ objects to shreds. C++ objects must be allowed to copy t

Recursive functions, a program to determine whether a number is an odd or e...

a program to determine whether a number is an odd or even using recursive function

Game coding, polishing the jewel game with c coding

polishing the jewel game with c coding

Program to list the cities and their states, The program will ask the user ...

The program will ask the user to enter: '1' to List the cities(and their state abbrev)  from largest to smallest (by their population) with their population '2'  to List the

Described friend?, A: Something to let your class to grant access to anothe...

A: Something to let your class to grant access to another class or function. Friends may be either classes or functions. Class grants access privileges to its friends. In genera

C program to demonstrate pointer to array, C program to demonstrate Pointer...

C program to demonstrate Pointer to array: void p2a(int *); void main() {                 int x=10, *a,**b;                 int arr[5];                 a=&x;//po

Algorithm and flowcharts, algorithm to find out all the factors of given po...

algorithm to find out all the factors of given positive integers

Array, how to pass array

how to pass array

Area under curve, find the area of a curve y=f(x) between x=a and x=b integ...

find the area of a curve y=f(x) between x=a and x=b integrate f(x) between limits a and b   #include float start_point, /* GLOBAL VARIABLES */

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