Languages Focus: Case Sensitivity

Case sensitiviy in this case is referring to commands and variable names. For example, are "printf" and "PrintF" equivalent? Are fullname and FullName equivalent? When you create commands, operations, methods, or variables should you worry about case?

Variables and commands are not case sensitive.

var
 FullName: String;
begin
 fullname := 'Mike Prestwood';
 ShowMessage(fullNAME);
 SHOWMESSAGE(FULLNAME);
 showmessage(fullname);

end;

Cannot Declare Different Cased Variables

The compiler will not let you compile two variables within the same scope with the same name even with different case:

var
  MyName : String;
  MYNAME : String; //Compiler error!

Wrong Cased Variables Legal

Although you probably should stick with consistent casing, it is legal. If can declare a variable with one case and to use it with another case.

For example:

//The following mixed case varialbes work:

var
  MyName : String;
begin
  myname := 'Lisa';
  ShowMessage('Hello ' + MYNAME);
end;