c++ faq - What does the C++ standard state the size of int, long type to be?

I'm looking for detailed information regarding the size of basic C++ types.

I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler.

But are there any standards for C++?

I'm using Visual Studio 2008 on a 32-bit architecture. Here is what I get:

char  : 1 byte
short : 2 bytes
int   : 4 bytes
long  : 4 bytes

float : 4 bytes
double: 8 bytes

I tried to find, without much success, reliable information stating the sizes of char, short, int, long, double, float (and other types I didn't think of) under different architectures and compilers.