The switch statement when comparing a character

We have code like this in an old parser we wrote:

Code:

---

char *word;

...
...
switch (*word)
{
  case 'A': ...; break;
  case 'B'; ...; break;
  case '-'; ...; break;
  ...
}

---

Now if we use the generic data type TCHAR, do we code it like this?

Code:

---

TCHAR *word;

...
...
switch (*word)
{
  case _T('A'): ...; break;
  case _T('B'); ...; break;
  case _T('-'); ...; break;
  ...
}

---

or does the switch statement assumes a single byte character?

Thanks,

MC

It works with integeral types. So it's fine to do:

Code:

---

case 12345:

---

Quzah.

But I was not comparing integers, I was comparing characters. So what you are saying underneath it really compares the ASCII value of the characters?

If so than the "wide" version will not work correct?

MC

Depends what a TCHAR is. If TCHAR isn't an alias for some integral type, then no. TCHAR is not a standard C type.

TCHAR is a macro which means char when UNICODE is defined and means wchar_t when UNICODE is not defined.

Reference:
http://msdn.microsoft.com/library/de...n_tchar..h.asp

So in summary, my question is really if TCHAR is wchar_t would this work?

MC

Again, is TCHAR integeral? Then yes. If not, then no. That's how a case works. A char is the same thing as an int, it's just most likely smaller, and its sign might possibly be different. Other than that, they're identical.


Quzah.