Define – the marco that can save time

The define part of the c/c++ language is able to save on coding time. The define is only really good for a one line of code that a function would be far to much of a over kill.

Here are three examples of the define,

#define MAXVALUE 20

this will allow for a hard coded value to be used within the coding

#define PrintHello cout << "Hello" << endl;

this will print hello when you call the marco as

void main()
{
       PrintHello;
}

and last is passing parameters to the marco

#define PrintWord(word) cout << word << endl;

will change the word parameter within the code to the passed value for example both will work

void main()
{
       PrintWord("hi there");
       PrintWord(3);
}

since the marco will convert the passed parameter to the value.