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

Can one create operator** for "to-the-power-of" operations?, A: no, can't. ...

A: no, can't. The names of, precedence of, associativity of, and arity of operators is fixed through the language. In C++, there is no operator** so you cannot create one for a

Assignment help, It''s that spooky time of year when the dead walk the Eart...

It''s that spooky time of year when the dead walk the Earth, things go bump in the night, and the Centers for Disease Control (CDC) recognizes the need for zombie preparedness (

Database, write a c++ program to update employee records

write a c++ program to update employee records

Program for hangman game problem, Program for Hangman Problem #inclu...

Program for Hangman Problem #include #include #include #include #include static void playGame(); static void printMistakes(int n); st

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

Guidelines or "rules of thumb" for overloading operators?, What are some gu...

What are some guidelines / "rules of thumb" for overloading operators? A: Here are a few guidelines / rules of thumb .Use common sense. If your overloaded operator makes life si

Super ansii prgm, Ask quIn the Byteland country a string "s" is said to sup...

Ask quIn the Byteland country a string "s" is said to super ascii string if and only if count of each charecter in the string is equal to its ascci value in the byteland country as

Data Handling in computers, though the ascii is called 7-bit code. why do w...

though the ascii is called 7-bit code. why do we use 8-bits to represent a character?

Give a formal expression of the specification, A function REPAT is specifie...

A function REPAT is specified below. Function REPAT(c in Char, i in Int, s in mString) return in mString pre 1 ≤ i ≤ the length of s. post The returned value is a string identic

Array of structure, how to define a array of structure

how to define a array of structure

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages