Limits?

Spoj uses g++ compiler .Range for data types in g++ is given here6.

'm looking for detailed informations 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 ?

I'm using Visual Studio 2008 on a 32 bit achitecture. 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 informations telling the sizes of char, short, int , long, double, float (and other types I don't think of) under different architecture and compiler.