Re: [ProgSoc] returning ptr to struct in c++ ?

[Matt <matt@nospam.mailtv.com.au>]

On Tue, May 16, 2000 at 06:13:46PM +0200, Geoffrey Saxby wrote:
> Hi! I writing some C++ code. I have stuff this in the header:
> 
> ////////////////////////////////////////
> typedef struct _point
> {   long   x;
>     long   y;
> } point;
> 
> typedef struct _obstacle
> {
>     point   tl;  // top left
>     point   tr;  // top right
>     point   bl;  // bottom left
>     point   br;  // bottom right
> } obstacle;
> 
> typedef struct _object
> {
>     obstacle * ob;
>     int        ttl;
>     int        type;
> } object;
> 
> class geoff {
>     public:
> 	object * cloneOb(const object * pSrc) const;
> };
> ////////////////////////////////////////
> 
> And this stuff is in the .cpp file:
> 
> ////////////////////////////////////////
> object * geoff::cloneOb(const object * pSrc) const
> {
>     // alloacate space
>     pNewOb = new object;
>     pNewOb->ob = new obstacle;
> 
>     // fill it in
>     pNewOb->ob->tl.x = pSrc->ob->tl.x; pNewOb->ob->tl.y = pSrc->ob->tl.y;
>     pNewOb->ob->tr.x = pSrc->ob->tr.x; pNewOb->ob->tr.y = pSrc->ob->tr.y;
>     pNewOb->ob->bl.x = pSrc->ob->bl.x; pNewOb->ob->bl.y = pSrc->ob->bl.y;
>     pNewOb->ob->br.x = pSrc->ob->br.x; pNewOb->ob->br.y = pSrc->ob->br.y;
>     pNewOb->type = pSrc->type;
>     pNewOb->ttl = pSrc->ttl;
> 
>     return pNewOb;
> }
> //////////////////////////////////////// 

> but I get a compiler error "Declaration syntax error" on the
> function declaration in the .cpp file.

> (There are, of course, other things in the files like constructors
> etc, but they do not cause me problems :)


last i checked in C

foo_t const *foo;

and

foo_t * const foo;

are the same thing. i would be very suprised that they would be
different in C++ (but there may be some inane reason). try changing
your code to match, ie

object const *geoff::cloneOb(const object * pSrc);


	matt
-- 
"Linux can be a harsh mistress"
	-- bert hubert
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