pointer to a function

[alice]

hi all,

Can anybody plz tell me that what is the return type of the function

to which ptf points in the following definition:

#define (*ptf())

Thanks.

 

[Joona I Palaste]

hi all,

Can anybody plz tell me that what is the return type of the function

to which ptf points in the following definition:

#define (*ptf())

Thanks.

The above code is invalid. The C preprocessor is a simple, "stupid",
token-by-token replacer. It can't handle the C type system syntax.
Therefore your whole question becomes meaningless.

 

[Merrill & Michele]

"Joona I Palaste"




The above code is invalid. The C preprocessor is a simple, "stupid",
token-by-token replacer. It can't handle the C type system syntax.
Therefore your whole question becomes meaningless.

Mr. Palaste is correct. I sometimes think that advanced developers can't
quite see what we learners are getting at, but that code snippet is DOA to
my eye as well. If you follow up, I suggest you #define plz please . MPJ

 

[Jack Klein]

hi all,

Can anybody plz tell me that what is the return type of the function

to which ptf points in the following definition:

#define (*ptf())

Thanks.

The macro does not define anything, in fact it is a syntax error.

Now if you replace it with this:

typedef (*ptf)();

....then under older versions of the C standard, ptf would point to a
function returning an int. Since the 1999 revision of the C standard,
my example is illegal as all declarators must contain a type. This
would need to be:

typedef int (*ptf)();