Explain the #undef directive, C/C++ Programming

Assignment Help:

The #undef Directive

This directive undefines a previously explained macro. For, example the following will give an error since PI is undefined.

#define PI 3.14285

void main()

{

cout<< PI; // no error here

# undef PI;

cout << PI; // error after undef.

}

Related Discussions:- Explain the #undef directive

Class, array of class objects and single inheritance

array of class objects and single inheritance

Describe the “placement new" and why would i use it?, Describe the “placeme...

Describe the “placement new" and why would I use it?

Specifying and working rules of a class, Specifying a Class: As discuss...

Specifying a Class: As discussed a class is defined to develop an algorithm and bind it together in a core shell. A class is an abstract data type (ADT). The binding of dat

Header files, use of header files

use of header files

Program is to perform string operations, Program is to perform string opera...

Program is to perform string operations: Program is to perform string operation without using in built functions using classes and object void mainmenu() { clrs

Lexicographically preceding permutation, Given an integer n and a permutati...

Given an integer n and a permutation of numbers 1, 2 ... , n-1, n write a program to print the permutation that lexicographically precedes the given input permutation. If the given

#superASC2 SRTING COST, A string S is said to be "Super ASCII", if it conta...

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

Compiler Design - Limit the methods, I need the code for this plss....

I need the code for this plss....

Define automatic storage classes - computer programming, Define Automatic s...

Define Automatic storage classes - computer programming? The Variables declared within function bodies are automatic by default and automatic variables are declared inside a fu

Compiler Design - Limit the Method Instructions, please do send me the codi...

please do send me the coding of this program

Write Your Message!

Name

Email id

Message

Verfication Code

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!

Submit Assignment

User Account

All Pages