On Wed, Nov 12, 2003 at 12:28:32AM +0000, Chris Howells wrote:
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> Hi,
>
> On Tuesday 11 November 2003 23:02, Lowell Gilbert wrote:
>
> > each other. [There is a myth that C++ is a superset of C, but this is
> > not really the case.]
>
> C++ is based on C. Any C code (providing it does not use certain key word that
> are reserved in C++) can be compiled in a C++ compiler.
Wrong. C++ is based on C, but it has made some changes so it is not
quite a superset of C.
Try for example the following little program:
#include <stdlib.h>
int main(void)
{
char *a;
a=malloc(10);
if(a) free(a);
return 0;
}
This is valid C, but not valid C++. (C++ does not perform automatic
conversion between void pointers and other pointers.)
This should suffice to demonstrate that C++ is not really a superset of
C. The intersection between C and C++ is a usable programming language
though, but it is rarely worth the trouble to restrict oneself to that
subset of the languages.
--
<Insert your favourite quote here.>
Erik Trulsson
[EMAIL PROTECTED]
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