problem in declaration

[David Lindauer]

If I do this:

struct xyz
{
xyz();
int a,b;
} var1;

it compiles.

But if I do this

struct xyz
{
xyz();
int a,b;
} var2();

it doesn't compile. The comeau compiler says var2() is a function
rather than a variable initialization. ..

but then I can do this:

struct xyz
{
xyz();
int a,b;
} ;
struct xyz var3();

and that compiles.

What is the rational for the difference in behavior?

Thanks,

David

[Victor Bazarov]

Re: problem in declaration

David Lindauer wrote:[color=blue]
> If I do this:
>
> struct xyz
> {
> xyz();
> int a,b;
> } var1;
>
> it compiles.
>
> But if I do this
>
> struct xyz
> {
> xyz();
> int a,b;
> } var2();
>
> it doesn't compile. The comeau compiler says var2() is a function
> rather than a variable initialization. ..[/color]

Yes, it is.
[color=blue]
> but then I can do this:
>
> struct xyz
> {
> xyz();
> int a,b;
> } ;
> struct xyz var3();
>
> and that compiles.
>
> What is the rational for the difference in behavior?[/color]

Types are not allowed to be _defined_ in a function declaration.

V
--
Please remove capital As from my address when replying by mail

[Rolf Magnus]

Re: problem in declaration

David Lindauer wrote:
[color=blue]
> If I do this:
>
> struct xyz
> {
> xyz();
> int a,b;
> } var1;
>
> it compiles.
>
> But if I do this
>
> struct xyz
> {
> xyz();
> int a,b;
> } var2();
>
> it doesn't compile. The comeau compiler says var2() is a function
> rather than a variable initialization. ..
>
> but then I can do this:
>
> struct xyz
> {
> xyz();
> int a,b;
> } ;
> struct xyz var3();
>
> and that compiles.
>
> What is the rational for the difference in behavior?[/color]

If it looks like a function declaration, it is a function declaration.
Your second example is similar to:

type name();

which clearly looks like a function declaration.