enum question

[Joe Van Dyk]

I have some code like:

typedef enum
{
First = 0,
Second,
Third,
Fourth,
} Something;

Can the "= 0" part on the first value be safely removed? I believe it
can -- just want to confirm.

Thanks,
Joe

 

[ramu]

I have some code like:

typedef enum
{
First = 0,
Second,
Third,
Fourth,
} Something;

Can the "= 0" part on the first value be safely removed? I believe it
can -- just want to confirm.

Thanks,
Joe

 

[jaysome]

I have some code like:

typedef enum
{
First = 0,
Second,
Third,
Fourth,
} Something;

Can the "= 0" part on the first value be safely removed? I believe it
can -- just want to confirm.

Yes. Guaranteed by the standard.

In fact, you can remove it and even do stuff like this:

int *ptr = NULL;
/* some lines later */
if ( ptr == First ) /* if ptr is NULL */

Altough legal, don't do that. Do this instead:

if ( !ptr )