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

C programming assignment, good night i have an assignment that i really nee...

good night i have an assignment that i really need help with. i have to create a struct file with tag name book to have members int book_id char isbn[255]

C++, padovan string c++ program

padovan string c++ program

Advantages of using pointers over arrays, Question : (a) Define a Poin...

Question : (a) Define a Pointer. Provide an example of an integer pointer variable. (b) Give advantages of using pointers over arrays. (c) Declare an integer pointer

Get linux caller id to work with usb modem on ubuntu, Project Description: ...

Project Description: I am seeking someone who can make this modem work with Linux Caller ID on Ubuntu present stable version. Skills required are C Programming, Python

multiplication of matrices with compatibility check, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Sort wars, Explain each of the algorithms in a way that would be understand...

Explain each of the algorithms in a way that would be understandable to an intelligent person who is not familiar with programming. You should not use any code (or even pseudo code

Explain static class members, Static Class Members As we already know a...

Static Class Members As we already know all the objects of the class have dissimilar data members but invoke the similar member functions. Though, there is an exception to this

Programing, Define a structure to store roll no, name and marks of a studen...

Define a structure to store roll no, name and marks of a student. b) Using the structure of Q2. a), above write a ''C'' program to create a file "student.dat". There must be one r

Palindrome, A palindrome is a string that reads the same from both the ends...

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

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