Time for action – Other variable errors

There are a few more errors we need to take a look at before we move on. These ones have to do with the declaration and use of variables.

1. Let's take a look at this PostBeginPlay function:

   simulated function PostBeginPlay()
   {
       local int Int1, Int2;
   
       Int1 = 3;
       Int2 = 5;
       Int1 + Int2;
   }

2. If we try to compile that, we'll get this error message:

   [0003.77] Error: R:\UDK\UDK-AwesomeGame\Development\Src\BrokenGame\Classes\BrokenActor.uc(11) : Error, ';': Expression has no effect

3. The source of that error is in this line:

       Int1 + Int2;

   We're not assigning the result of that to any variable, and we're not using it as a comparison or anything like that. If we wrote it like the following we wouldn't get the error:

   Int1 = Int1 + Int2;

   Not something you'd come across often, but it's good to know what the error message means.

4. You would also get the same error message if a function parameter had the same name as another function, and you tried calling that function...