number of bytes for a type in C++

[jrefactors]

In C++, the amount of memory used to store int is 4 bytes, or dependent
upon the hardware?
I think still dependent on the machine, since C++ compiler is platform
dependent.

Please advise. Thanks

[JH Trauntvein]

I believe that the standard guarantees minimum ranges for intrinsic
types. For example, I believe that the minimum range for type int is
[-32768, +32767].

Regards,

Jon Trauntvein

[Victor Bazarov]

jr********@hotmail.com wrote:

In C++, the amount of memory used to store int is 4 bytes, or dependent
upon the hardware?
I think still dependent on the machine, since C++ compiler is platform
dependent.

You think right.

[pvinodhkumar]

It is depending upon the hardware.

According to TCPPPL,
this is what guaranteed about the sizes of fundamental types

1 = sizeof(char) <= sizeof(short) <= sizeof(int) <=sizeof(long)
1<= sizeof(bool) <= sizeof(long)
sizeof(char) <=sizeof(wchar_t) <= sizeof(long)
sizeof(float) <= sizeof(double) <= sizeof(long double)
sizeof(N) = sizeof(signed N) = sizeof(unsigned N)

[Mark McIntyre]

On 10 Dec 2004 09:07:28 -0800, in comp.lang.c , pv**********@gmail.com
wrote:

It is depending upon the hardware.

And the compiler. Think about old DOS compilers.

--
Mark McIntyre
CLC FAQ <http://www.eskimo.com/~scs/C-faq/top.html>
CLC readme: <http://www.ungerhu.com/jxh/clc.welcome.txt>

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[Keith Thompson]

jr********@hotmail.com writes:

In C++, the amount of memory used to store int is 4 bytes, or dependent
upon the hardware?
I think still dependent on the machine, since C++ compiler is platform
dependent.

In C, it's dependent on the implementation, with some specific
constraints imposed by the standard.

But since your question is about C++, cross-posting it to comp.lang.c
was a bad idea.

Followups redirected.

--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.

[Rolf Magnus]

Keith Thompson wrote:

jr********@hotmail.com writes:

In C++, the amount of memory used to store int is 4 bytes, or dependent
upon the hardware?
I think still dependent on the machine, since C++ compiler is platform
dependent.

In C, it's dependent on the implementation, with some specific
constraints imposed by the standard.

The same is true for C++. The rules regarding integer type sizes are the
same in C++ as in C, with the exception that C++ doesn't know the "long
long" type.