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

Wap to print the largest number from any 10 numbers, WAP TO PRINT THE LARGE...

WAP TO PRINT THE LARGEST NUMBER FROM ANY 10 NUMBERS #include stdio.h> #include conio.h>   void main()   {                    int a[10],i,max;

Data structure, Project Description: Project is related indexing data re...

Project Description: Project is related indexing data related some data structure. I need to share all information related project later if i contact any body Skills required

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.

Tranporsition cipher, write a C program that can display the transpose form...

write a C program that can display the transpose form of a ciphertext matrix.

Explain reference types, Reference Types The symbol "&" is interpreted ...

Reference Types The symbol "&" is interpreted as an address operator as well as AND operator. This operator is also used to declare a "reference variable". A reference is refer

Define procedure to return the sum of the odd elements, (a) Define a proced...

(a) Define a procedure (deep-member x e) that takes a list x and an element e and returns #t if the element e is in the list or in any lists that the list x contains. e.g., (dee

Program is to read the characters from keyboard, Program is to read the cha...

Program is to read the characters from keyboard: Program is to read the characters from keyboard one by one stored in different files as upper constants, lower constants, othe

Dll, i need amibroker afl to dll plugin

i need amibroker afl to dll plugin

Assignment, Develop a C++ program that uses a while to determine the gross ...

Develop a C++ program that uses a while to determine the gross pay (in Dollars) for each of several employees. The company pays “straight-time” for the first 40 hours worked by ea

Pointer to an array, Write a method (belonging to the TermStructure class) ...

Write a method (belonging to the TermStructure class) that takes a pointer to an array of bonds and an integer, representing the number of bonds in the array as arguments, and esti

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