C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  how do I overload (type) operator?          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message sean worlock Guest Posted: Thu Oct 28, 2004 6:47 am    Post subject: how do I overload (type) operator? I have written a simple class that modals the action of a complex number. This class is called CComplex. I wish to make my class as versatile as possable. Thus lets say I have some variables defined as following: int value1; double value2; float value3; and three Complex objects defined as: CComplex ONE,TWO,THREE; I wish to perform the following... ONE=(CComplex) value1; TWO=(CComplex) value2; THREE=(CComplex) value3; thus I need to create a type operator for my CComplex class. I have read many texts for the conversion of my class into other types but not the other way. could anybody point me in the correct direction for the prototype and function syntax to complete this? Back to top Catalin Pitis Guest Posted: Thu Oct 28, 2004 6:51 am    Post subject: Re: how do I overload (type) operator? "sean worlock" <sean_worlock (AT) sworlock (DOT) freeserve.co.uk> wrote Quote: I have written a simple class that modals the action of a complex number. This class is called CComplex. I wish to make my class as versatile as possable. Thus lets say I have some variables defined as following: int value1; double value2; float value3; and three Complex objects defined as: CComplex ONE,TWO,THREE; I wish to perform the following... ONE=(CComplex) value1; TWO=(CComplex) value2; THREE=(CComplex) value3; thus I need to create a type operator for my CComplex class. I have read many texts for the conversion of my class into other types but not the other way. could anybody point me in the correct direction for the prototype and function syntax to complete this? Just define constructor: CComplex::CComplex( double value). The statements can be then rewritten like: ONE=value1; TWO=value2; THREE=value3; Catalin Back to top Nicolas Pavlidis Guest Posted: Thu Oct 28, 2004 9:02 am    Post subject: Re: how do I overload (type) operator? sean worlock wrote: Quote: I have written a simple class that modals the action of a complex number. This class is called CComplex. I wish to make my class as versatile as possable. Thus lets say I have some variables defined as following: int value1; double value2; float value3; and three Complex objects defined as: CComplex ONE,TWO,THREE; I wish to perform the following... ONE=(CComplex) value1; TWO=(CComplex) value2; THREE=(CComplex) value3; thus I need to create a type operator for my CComplex class. I have read many texts for the conversion of my class into other types but not the other way. could anybody point me in the correct direction for the prototype and function syntax to complete this? You can template the the hole class: template<typename UnderLyingType> class CComplex Mayby you'd have to check if the type is a correct one, such as double and so on. HTH && Kind regards, Nicolas Back to top Tom Widmer Guest Posted: Thu Oct 28, 2004 10:17 am    Post subject: Re: how do I overload (type) operator? On Thu, 28 Oct 2004 09:51:48 +0300, "Catalin Pitis" <catalin.pitis (AT) iquestint (DOT) com.renameme> wrote: Quote: "sean worlock" <sean_worlock (AT) sworlock (DOT) freeserve.co.uk> wrote in message news:clq4mr$rvm$1 (AT) news8 (DOT) svr.pol.co.uk... I have written a simple class that modals the action of a complex number. This class is called CComplex. I wish to make my class as versatile as possable. Thus lets say I have some variables defined as following: int value1; double value2; float value3; and three Complex objects defined as: CComplex ONE,TWO,THREE; I wish to perform the following... ONE=(CComplex) value1; TWO=(CComplex) value2; THREE=(CComplex) value3; thus I need to create a type operator for my CComplex class. I have read many texts for the conversion of my class into other types but not the other way. could anybody point me in the correct direction for the prototype and function syntax to complete this? Just define constructor: CComplex::CComplex( double value). The statements can be then rewritten like: ONE=value1; TWO=value2; THREE=value3; Note that if you (the OP) want to require the cast notation, you can declare the constructor "explicit". e.g. explicit CComplex(double value); //don't use explicit in definition I can't think of a good reason why you would want to do this though. Also note that there is a perfectly good complex number class that is part of the standard library: std::complex<double>, declared in the <complex> header. Tom Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ language (comp.lang.c++) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.