C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Mathematical Programming          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message gelong Guest Posted: Sat Jan 29, 2005 4:21 am    Post subject: Mathematical Programming Hi there, I have a problem in writing a mathematical function using C++ programming. How to write an input that can insert whole equation? Example is the input are x² + 3y - 4z³ = 0. In maple, it was x^2+3*y-4*z^3 = 0, but how to write it in C++ ? How about the declaration? Back to top Efrat Regev Guest Posted: Sat Jan 29, 2005 7:57 am    Post subject: Re: Mathematical Programming "gelong" <gelong83 (AT) yahoo (DOT) com> wrote Hi there, I have a problem in writing a mathematical function using C++ programming. How to write an input that can insert whole equation? Example is the input are x² + 3y - 4z³ = 0. In maple, it was x^2+3*y-4*z^3 = 0, but how to write it in C++ ? How about the declaration? It's somewhat hard (at least for me) to understand what you're asking: If your question is how to use C++ mathematical operators, then you can use +,-,*,/ as usual, e.g., x + y, and for ^ you can use the function pow. But when you write x² + 3y - 4z³ = 0, then you're writing a mathematical equation - a concept which C++ doesn't directly "understand". The question is what do you want to do with "x² + 3y - 4z³ = 0"? Do you want plot it? search numerically for minimum and maximum? solve it symbolically (say for x)? Based on your answer, you need to find an appropriate library. So it might help if you clarify further. For example, you might repost and say "I'm looking for a library that can plot 3D mathematical functions", or something like that. Back to top polikARP Guest Posted: Fri Feb 04, 2005 11:25 pm    Post subject: Re: Mathematical Programming Fri, 28 Jan 2005 20:21:38 -0800|gelong : Quote: Hi there, I have a problem in writing a mathematical function using C++ programming. How to write an input that can insert whole equation? Example is the input are x² + 3y - 4z³ = 0. In maple, it was x^2+3*y-4*z^3 = 0, but how to write it in C++ ? How about the declaration? Hi , maybe somthin like that : -/+ * multi * ( X * n ) ^ pow as elements of array struct Node { int multi; // if not exist =1 int n; // ... 1 int pow; // 1 int sign; // 1 or -1 } ; Node abc[3]; /* abc[0] : */ multi=1;n=1;pow=3;sign=1; /* will be 1 * 1 * ( X * 1 ) ^ 3 etc.. */ sry4engl Back to top Ioannis Vranos Guest Posted: Sat Feb 05, 2005 8:36 am    Post subject: Re: Mathematical Programming gelong wrote: Quote: Hi there, I have a problem in writing a mathematical function using C++ programming. How to write an input that can insert whole equation? Example is the input are x² + 3y - 4z³ = 0. In maple, it was x^2+3*y-4*z^3 = 0, but how to write it in C++ ? How about the declaration? You will have to accept the input as text, parse it and make the necessary calculations and output. -- Ioannis Vranos http://www23.brinkster.com/noicys 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.