Newsgroups: comp.lang.c++
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!theory.tn.cornell.edu!lijewski
From: lijewski@theory.tn.cornell.edu (Mike Lijewski)
Subject: Re: Constructor and class initialization w/ arrays
Message-ID: <1991Mar29.013805.19560@batcomputer.tn.cornell.edu>
Keywords: How do you do it?
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References: <3118@beguine.UUCP> <642@taumet.com>
Date: Fri, 29 Mar 1991 01:38:05 GMT

In article <642@taumet.com> steve@taumet.com (Stephen Clamage) writes:
>Brian.Chan@samba.acs.unc.edu (Brian Chan) writes:
>
>>Say I have the following declarations:
>>Class A: { int a; int b; }
>>Class B: public A { ...  }
>>And constructors:
>>Class A::A(int x, int y) { }
>>Class B::B(int z, int x, int y) :A(x, y) { ...  }
>> ... 
>>But if I want to declare a table (array) of Bs, say , 2, how do I do it?
>
>You cannot declare an array of class objects using other than the default
>(no parameters) constructor.  There is no syntax to support it.  You can
>declare a constructor with all default parameters standing in for the
>default constructor, and that one will be used.  That's the best you can do.
>(This last is a language change, and works with recent C++ compilers.)

You certainly can declare arrays of class objects using other than the
default constructor.  The following declares an array of four objects
of class B:

class B barray[] = { B(1,2,3), B(4,5,6), B(7,8,9), B(10,11,12) };

>-- 
>
>Steve Clamage, TauMetric Corp, steve@taumet.com


-- 
Mike Lijewski  (H)607/272-0238 (W)607/254-8686
Cornell National Supercomputer Facility
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