Thread: General Class

have to declare a variable(class) depending on some info I get from a file, something like this:

Code:

/*************************/
(...)
if (what_I_read == '1')
Class1 system();
else
Class2 system();
(...)

system.start();
system.stop();
/**************************/

So I want the variable 'system' to be something different depending on certain conditions, but I get a compiling error because 'system' isn't declared. How can I do something like that? Maybe another Template Class???

Also, just so you know, the following code piece does not create an instance of class SomeClass, it declares a function returning an instance of class SomeClass:

Code:

SomeClass a();
a.method();  // This is wrong, 'a' is a function not an instance of SomeClass

This is the correct way to create an instance of a class with the default constructor

Code:

SomeClass b;
b.method();  // This works, because now 'b' is indeed an instance of SomeClass

Just thought you'd like to know that, seeing as how you are declaring functions in your own example...

and

Code:

delete system;

'system' isn't declared.

you system var is declared in 2 diferent scopes, which are the if-block and else-block.
outside them, system doesn't exist. you have to declare it outside the ' if - else ' like Prelude showed.