From -1824400697134995485 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,68893a751f6881d X-Google-Attributes: gidf78e5,public From: Hyman Rosen Subject: Re: Re Matt Austern: .. about C++ .. all is pretty! Date: 1997/08/04 Message-ID: #1/1 X-Deja-AN: 262484443 References: <01bc9345$1d940e40$d09eaec7@paul> <33D49F29.61ED@informatik.uni-stuttgart.de> <33D60D3F.167E@wizard.net> <33DC809A.1FC2@informatik.uni-stuttgart.de> <33E1EDC9.4BC8@informatik.uni-stuttgart.de> X-Original-Date: Mon, 4 Aug 1997 17:13:46 GMT Originator: austern@isolde.mti.sgi.com Organization: JYACC, Inc. X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBVAwUBM+Y4Pky4NqrwXLNJAQF/QAIArGT/SdHAzFcAhtAaP1aJvvkvlAbihOwI PGM1cbLAEY4WnkewUvogrpluH8FFiny7Q8lxJFJlxKRNwBONFFx0xQ== =Ltre Newsgroups: comp.std.c++ Heinz Kohl writes: > But today i've fallen into a one of the usual silly pitfalls in C++: > typedef char x[40]; .. class z ..{ x y; z(x p) { y = p; .. } .. } > Do you see it? Naturally, y and p are totally incompatible, > compiler resignes at this point. This is not a silly pitfall in C++, this is a silly pitfall in C. The type 'x' is an array. In neither C nor C++ can you pass an array by value. Neither is an array an lvalue; you can not assign to arrays. If you are making these kinds of errors, it's little wonder that your code has all sorts of obscure bugs. I would advise you to learn the language better. Also, everyone on this group will be happy to tell you to stop using C-style arrays altogether, and switch to string and vector. --- [ comp.std.c++ is moderated. To submit articles: Try just posting with your newsreader. If that fails, use mailto:std-c++@ncar.ucar.edu comp.std.c++ FAQ: http://reality.sgi.com/austern/std-c++/faq.html Moderation policy: http://reality.sgi.com/austern/std-c++/policy.html Comments? mailto:std-c++-request@ncar.ucar.edu ]