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Reading some code today I saw this:

static int
CreateCompress(cinfo, version, size)
j_compress_ptr cinfo;
int version;
size_t size;
{
jpeg_create_compress(cinfo);
return TCL_OK;
}

Is this 100% equivalent to:

static int CreateCompress(j_compress_ptr cinfo, int version, size_t size) {
jpeg_create_compress(cinfo);
return TCL_OK;
}

Have you ever seen that kind of syntax before? This was my first time...

Francesco Gallarotti

On Tue, 02 Dec 2003 04:58:12 GMT, "Francesco Gallarotti"
<> wrote in comp.lang.c++:

> Reading some code today I saw this:
>
> static int
> CreateCompress(cinfo, version, size)
> j_compress_ptr cinfo;
> int version;
> size_t size;
> {
> jpeg_create_compress(cinfo);
> return TCL_OK;
> }

This code is not C++, it is pre-standard C. No C++ compiler should
accept it.

> Is this 100% equivalent to:
>
> static int CreateCompress(j_compress_ptr cinfo, int version, size_t size) {
> jpeg_create_compress(cinfo);
> return TCL_OK;
> }

In C, the operation of the function is the same. But it is not 100%
equivalent in that the first form does not create a prototype.


> Have you ever seen that kind of syntax before? This was my first time...
>
> Francesco Gallarotti

Sure, see the C Programming Language, first edition, not the second.
And most books about C written prior to 1990, and sadly too many
written afterwards. But it's nothing to do with C++.

--
Jack Klein
Home: http://JK-Technology.Com
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> This code is not C++, it is pre-standard C.
> [...] But it's nothing to do with C++.

Sorry I didn't know it otherwise I wouldn't post it on this NG... Thanks for
pointing it out.
It surprises me even more that the snippet of code I post was part of a file
named .cpp.

Thanks,

--Francesco