Thread: switch/case - Just wondering

I was just wondering wether there are any reasons why I shouldn't do something like this:

Code:

void func(int p) {
  switch(p) {
    case 1: {
      int i;
      /* Do something with i */
    } break;

    case 2: {
      char msg[10];
      /* Do something with msg */
    } break;
  }
}

instead of

Code:

void func(int p) {
  int i;
  char msg[10];

  switch(p) {
    case 1:
      /* Do something with i */
      break;
    case 2:
      /* Do something with msg */
      break;
  }
}

So basicly, is it alright to place brackets in every case and then declare variables in it? Because I'm learning the win32 API at the moment and I don't like it when I have to declare all of my variables at the top of the WndProc function, especially with big programs it's annoying...