Re: Data Type Size Question

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Wed, 10 Jun 2009 02:29:34 -0700 (PDT)
Message-ID:
<33968717-ef2f-466b-b19d-540646a69b46@k38g2000yqh.googlegroups.com>
On Jun 9, 8:20 pm, Fred <fred.l.kleinschm...@boeing.com> wrote:

On Jun 9, 10:53 am, red floyd <no.spam.h...@example.com> wrote:

Immortal Nephi wrote:

On Jun 9, 10:42 am, red floyd <no.spam.h...@example.com> wrote:

Immortal Nephi wrote:

C++ Compiler provides four data type sizes

correct
  (char, short, long, and

long long).

Incorrect, at least for C++03. Long long is not defined
in C++03, but it is in C++0x.

In C++03 the sizes are char, short, int and long.


Is Microsoft C++ Compiler (from Visual Studio .Net 2008) C++03?


Some compilers support long long as an extension.


What about float and doubble?

I thought the int-type sizes were only required to follow:

 sizeof(short) <= sizeof(int) <= sizeof(long)

All three *could* be the same length


And are on some architectures. For that matter, all could be
equal to 1 (and thus be the same size as char)---I think some
embedded processors use this.

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