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I have this in a .h file which I include in a .cpp file:

typedef struct {
double x;
double y;
} pointz;

But when I compile I get:

graphics/debug.h:13: error: conflicting declaration ‘typedef struct
pointz pointz’
graphics/debug.h:13: error: ‘pointz’ has a previous declaration as
‘typedef struct pointz pointz’

But I have not previously declared 'points'.

desktop wrote:
> I have this in a .h file which I include in a .cpp file:
>
> typedef struct {
> double x;
> double y;
> } pointz;
>
In C++, don't use typedef.

struct pointz
{
double x;
double y;
};

--
Ian Collins.

"Ian Collins" <ian-> wrote in message
news:...
> desktop wrote:
>> I have this in a .h file which I include in a .cpp file:
>>
>> typedef struct {
>> double x;
>> double y;
>> } pointz;
>>
> In C++, don't use typedef.
>
> struct pointz
> {
> double x;
> double y;
> };

In addition, it may be you are tying to include this twice without include
guards.

Ian Collins wrote:
> desktop wrote:
>> I have this in a .h file which I include in a .cpp file:
>>
>> typedef struct {
>> double x;
>> double y;
>> } pointz;
>>
> In C++, don't use typedef.
>
> struct pointz
> {
> double x;
> double y;
> };
>

with

struct pointz {
double x;
double y;
};

Then I just get:


graphics/debug.h:10: error: redefinition of ‘struct pointz’
graphics/debug.h:10: error: previous definition of ‘struct pointz’

even though its not been declared before.

desktop wrote:
> Ian Collins wrote:
>> desktop wrote:
>>> I have this in a .h file which I include in a .cpp file:
>>>
>>> typedef struct {
>>> double x;
>>> double y;
>>> } pointz;
>>>
>> In C++, don't use typedef.
>>
>> struct pointz
>> {
>> double x;
>> double y;
>> };
>>
>
> with
>
> struct pointz {
> double x;
> double y;
> };
>
> Then I just get:
>
>
> graphics/debug.h:10: error: redefinition of ‘struct pointz’
> graphics/debug.h:10: error: previous definition of ‘struct pointz’
>
> even though its not been declared before.

Then you have done what Jim speculated and included a header without
include guards twice.

--
Ian Collins.

"desktop" <> wrote in message
news:fdafhl$ci4$...
> Ian Collins wrote:
>> desktop wrote:
>>> I have this in a .h file which I include in a .cpp file:
>>>
>>> typedef struct {
>>> double x;
>>> double y;
>>> } pointz;
>>>
>> In C++, don't use typedef.
>>
>> struct pointz
>> {
>> double x;
>> double y;
>> };
>>
>
> with
>
> struct pointz {
> double x;
> double y;
> };
>
> Then I just get:
>
>
> graphics/debug.h:10: error: redefinition of ‘struct pointz’
> graphics/debug.h:10: error: previous definition of ‘struct pointz’
>
> even though its not been declared before.

Try this.

#ifndef POINTZ_DEF
#define POINTZ_DEF

struct pointz {
double x;
double y;
};

#endif

If that works, that means you are including the header twice without include
guards. Whcih are somethign like this:

myheader.h:
#ifndef MYHEADER_H
#define MYHEADER_H

// header goes here

#endif

On Sep 25, 1:06 pm, desktop <f...@sss.com> wrote:
> Ian Collins wrote:
> > desktop wrote:
> >> I have this in a .h file which I include in a .cpp file:
>
> >> typedef struct {
> >> double x;
> >> double y;
> >> } pointz;
>
> > In C++, don't use typedef.
>
> > struct pointz
> > {
> > double x;
> > double y;
> > };
>
> with
>
> struct pointz {
> double x;
> double y;
>
> };
>
> Then I just get:
>
> graphics/debug.h:10: error: redefinition of 'struct pointz'
> graphics/debug.h:10: error: previous definition of 'struct pointz'
>
> even though its not been declared before.- Hide quoted text -
>
> - Show quoted text -

Possibly a Header problem

Karthik Balaguru

desktop wrote:
> I have this in a .h file which I include in a .cpp file:

In a .cpp or in at least another .h file and the .cpp file?

You probably need multiple inclusion guards.

Jim Langston wrote in message...
>
> If that works, that means you are including the header twice without
include
> guards. Whcih are somethign like this:
>
> myheader.h:
> #ifndef MYHEADER_H
> #define MYHEADER_H
>
> // header goes here
>
> #endif

Add:

Do yourself a BIG favor and comment all #endif.

#endif // #ifndef MYHEADER_H

When you get to the bottom of a file and see 20 or 30 #endif, it is hard to
know which is ending what.

My GCC(MinGW) system headers all have the comments, and it really helps when
reading them (understanding them is a whole other thing! <G>).

--
Bob R
POVrookie

desktop wrote:
> graphics/debug.h:10: error: redefinition of ‘struct pointz’
> graphics/debug.h:10: error: previous definition of ‘struct pointz’
>
> even though its not been declared before.

Notice that the error lines say the previous definition is the same
file:line as the redefinition. This means the file graphics/debug.h is
being included multiple times.

As other people on this thread have noted, you should use inclusion
guards to prevent multiple includes from causing definitions to be seen
twice.

samuel