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

Define register simply with bit fields, Define register with bit fields? ...

Define register with bit fields? We could define register simply with bit fields: struct DISK_REGISTER { unsigned ready:1; unsigned error_occured:1; unsigned disk_spinni

Program to design list in c, Program to design list in c: Write a prog...

Program to design list in c: Write a program in c to insert the values in list void main() { int i=0; char a[20]; clrscr(); printf("Enter the line\n");

Encryption/Decryption, I need to include files so you can understand easier...

I need to include files so you can understand easier.

Padovan string, int n=6 string str=ZY

int n=6 string str=ZY

Algorithm, Algorithm for railway ticket booking process

Algorithm for railway ticket booking process

We want network-social app, We are seeking a talented developer/team with g...

We are seeking a talented developer/team with great experience in programming apps for both Android and iOS. Our project needs great skills and experience in making good functional

Need programmer to program a flex pcb, Project Description: I want a per...

Project Description: I want a person who will be able to program a flex PCB for my device as i meet the person i will be able to describe all my needs Skills required are C P

Program to calculate pie, This problem familiarizes you with using random n...

This problem familiarizes you with using random numbers in C++. The program is to compute a good approximation of p using a simulation method called "Monte Carlo". The following fi

ALGORITHM, write a pseudocode algorithm for a program that accepts a number...

write a pseudocode algorithm for a program that accepts a number and prints out its reciprocal(1/n) is required.the program should prevent the user from entering zero by asking t

Create a c project, The project will include Arena models (only .doe files)...

The project will include Arena models (only .doe files) and MSWord document for the report. Thereport must contain the following sections: 1. Introduction: (a) Statemen

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