What are “extended integer types”?

Question

Quoting from the book I\'m reading:

1. signed char, signed short int, signed int, signed long int, signed long long int are called

Answer 1

An example of the extended integer type is the __int64 64-bit signed integer type defined by MS Visual C. While this type is obviously an integral type, in older versions of MSVC it could not be obtained as int, long int, nor long long int. (MSVC added support for long long int in the meantime.)