Re: Why do people still use C instead of C++ ?

From:
"Bo Persson" <bop@gmb.dk>
Newsgroups:
comp.lang.c++
Date:
Sat, 10 Jan 2009 12:10:08 +0100
Message-ID:
<6sre0gF7rs3eU1@mid.individual.net>
Daniel Pitts wrote:

Bo Persson wrote:

Ian Collins wrote:

pgadmin wrote:

At the kernel level, there is a difference between C and C++.

And that difference is performance. At the kernel level,
each indirection is a memory reference, which is much slower
than register access.

The penalty in performance is probably around 50%, AT LEAST,
compared to pure C.


Care to prove that?


Sure.

In C++ everything is a class using multiple inheritance and dynamic
allocation. All funtions are virtual, always.

In C everything is an int, allocated to a register. Much more
efficient! :-)

Bo Persson


That is hardly a proof of anything. Especially since there are no
references or explanation of how you came to that conclusion.

Unless... Are you're being facetious and I missed it?


Probably. :-)

That was my impression of why some people don't like C++, including
Linus Torvalds.

The argument seems to be that it is easier to write bad code in C++
than in C. Some of us argue that it is also easier to write good code
in C++.

Bo Persson

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