c++ - Forward declare FILE * -

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how forward declare file * in c? using struct mytype;, naturally doesn't appear possible.

if behaviour differs between c standards or compilers , c++, of interest.

update0

why want aside: i'm asking how forward declare non-struct/"typedef'd struct" type can declare pointers it. using void * , casting in source file bit hackish.

you can't. standard states file "an object type capable of recording information needed control stream"; it's implementation whether typedef of struct (whose name don't know anyway), or else.

the portable way declare file #include <stdio.h> (or <cstdio> in c++).


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