does a case (switch statement) has to be "case 1/2/3/...)?

[palistov]

I'm pretty sure the case label has to be an integer value. You can probably use characters, such as case 'x', but a character is really an integer value anyways, it is just displayed differently.

For more complex logic like what you described in the second code box, you'll want to use if-else statements. They can get a little sore on the eyes, reading through a bunch of if-elses but they get the job done.