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

Operator overloading - c++ program, Operator overloading - c++ program: ...

Operator overloading - c++ program: Write a program in c to define operator overloading. class matrix{                   private :                 int x[2][2];

How to write program, how to write a program for all the types of beam reac...

how to write a program for all the types of beam reactions

C program for function of average, C program for function  of average ...

C program for function  of average int average(int); void main() {           int max=0,c=0;           clrscr();           printf("ENTER THE LIMIT OF INPUT FOR AV

Algorithem, algorithem of compound interest

algorithem of compound interest

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

Miniumshelf, write a prgm to find minimum total number of shelves including...

write a prgm to find minimum total number of shelves including the intial one required for loading process

Simple text editor using c programming in linux environment, Deliverables: ...

Deliverables: you are required to upload your c code in the assignment dropbox set in Moodle. You are supposed to work with Linux gcc compiler and pico editor for compiling via the

Bitwise operations, Bitwise Operations 1. Write a function that has an ...

Bitwise Operations 1. Write a function that has an int parameter n, makes an integer mask having the bit 1 at the nth place from the rightmost bit, and returns the mask. For ex

C program to design text styles, Program to design text styles: Write ...

Program to design text styles: Write a C program to design different text style char *fname[] = { "DEFAULT font",                                   "TRIPLEX font",

Electrical eng, calculate the total resisitance of a series circuit?

calculate the total resisitance of a series circuit?

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