Path: utzoo!utgpu!water!watmath!clyde!att-cb!att-ih!ihnp4!cord!gwr
From: gwr@cord.UUCP (GW Ryan)
Newsgroups: comp.lang.c++
Subject: Re: possible bugs
Keywords: typedef, stream.h, pointer-to-function parameters
Message-ID: <552@cord.UUCP>
Date: 1 Apr 88 03:14:09 GMT
References: <6112@watdragon.waterloo.edu>
Reply-To: gwr@cord.UUCP (59451-GW Ryan)
Distribution: na
Organization: AT&T Bell Laboratories, Liberty Corner
Lines: 32

In article <6112@watdragon.waterloo.edu> gjditchfield@violet.UUCP writes:
both your cases 1 and 2 work fine in 1.2.3 cfront

>3) This is more likely to be my misunderstanding than a bug.  The syntax in
>   the back of "The C++ Programming Language" suggests that functions can
>   have pointer-to-function parameters, but I get (uninformative) error
>   messages unless I use a typedef.
>	----------------------------------------
>	typedef int (*PFCCI)(char, char); // ptr to fn mapping 2 chars to int.
>	
>	void f( PFCCI p);
>	
>	void g( int (*p)(char, char) );
>	----------------------------------------
>	ccc  pmf.cc:
>	"pmf.c", line 5: error: syntax error
>	"pmf.cc", line 5: error: syntax error
>	"pmf.cc", line 5: error: syntax error
>	----------------------------------------
i don't understand what you are trying to do here. g() is supposed to be
a function taking what parameters??? are you trying to say g takes one
arg, which is the result of a call to what a PFCCI points at? If so,
declare it
	void g(int);
are you trying to pass a function pointer AND the 2 chars to run it on?
	void g(PFCCI, char, char);
i don't think you can explicitly look for calls to g() where the arg is
a call to a PFCCI function



jerry ryan