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From: stevens@inuxh.UUCP
Newsgroups: net.unix
Subject: Re: functions returning pionters to functions
Message-ID: <247@inuxh.UUCP>
Date: Fri, 16-Dec-83 09:47:11 EST
Article-I.D.: inuxh.247
Posted: Fri Dec 16 09:47:11 1983
Date-Received: Sat, 17-Dec-83 08:27:46 EST
References: <2430@azure.UUCP> <126@ccivax.UUCP>
Organization: AT&T Consumer Products Div., Indianapolis
Lines: 21

>	The declaration 'int (*ptr)()' defines 'ptr' as a pointer to
>	an integer function. What you want to do is replace 'ptr' with
>	your function definition of 'getroutine(name, table)', thus
>	giving 'int (*(getroutine(name, table)))()' which defines
>	getroutine as a function with two arguements which returns a
>	pointer to an integer function (or function that returns an 
>	integer).
>
>	Note that 'ptr' was replaced by '(getroutine(name, table))'.
>	The enclosing parenthesis are necessary to bind the arguements
>	to getroutine before the * (pointer binding) is applied.

No, the parentheses around '(getroutine(name, table))' are not required.
function arguments `()' bind more tightly than pointer dereferencing `*'.
(K & R, p. 49 [the page my K & R falls open to]).

--
Scott Stevens
AT&T Consumer Products Laboratories
Indianapolis, Indiana
UUCP: inuxh!stevens