What is Compatible "int" type in both 32Bit & 64Bit windows in C++?

Question

What is the compatible "int" datatype in C++ that can resize itself to 4 bytes on 32bit & 8 bytes on 64bit windows?

Although INT_PTR works fine but it reduces the readability as well as its description tells us to use it for pointer arithmetic.

Thanks

Answer 1

If you're looking for something standard, you're out of luck. The standard does not specify the size of any of the built-in datatypes.

Note, that INT_PTR does not imply pointer arithmetic. I means that the type will have the same size as void *, which is exactly what you want. It won't work on all platforms though (I'm pretty sure it's Windows specific).

Answer 2

under Visual Studio you are also offered __int3264 which does much the same as INT_PTR ...