I am working on a math project.I need a programming language that allows me to evaluate users input. Like Multiplying 2 complex numbers: I can't use a regular expression since there are many possibilities( I want to include all the steps of calculation.)
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5What's your question? – Reinstate Monica -- notmaynard Mar 22 '13 at 18:28
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The set of complex numbers (with i being an imaginary number. ) – neo Mar 22 '13 at 18:30
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Update your question with example and what you have tried ... – Baba Mar 22 '13 at 18:31
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Whoever retagged this: not `calculus`. Maybe `math`. – Reinstate Monica -- notmaynard Mar 22 '13 at 18:31
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"A regular expression"? What didn't work about it? What language are you using? Did you try a different regular expression? Have you written any other code aside from a regular expression? Having "read the question carefully" it says you "can't use a regular expression," not that you've actually tried it. – Reinstate Monica -- notmaynard Mar 22 '13 at 18:33
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What is the question you are trying to ask? – gordonk Mar 22 '13 at 18:37
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think about it like this: (2X +2Y) *(3X+4Y)=.... now here is the complicated step since the user can start multiplying any 2 values together which is always true – neo Mar 22 '13 at 18:37
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Are you having problems parsing or problems calculating? – gordonk Mar 22 '13 at 18:38
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Read the previous comment – neo Mar 22 '13 at 18:47
1 Answers
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You could use Scheme, it's a nice Lisp-like language that has built-in support for complex numbers. Also, since in Scheme data is code, it is really easy to turn user input into executable code.
Chicken Scheme is a popular variant.
Other popular languages with built-in complex number support are:
- R: use
ias suffix for imaginary numbers.(1+2i)^2returns-3+4j. - Python: use
jas a suffix for imaginary numbers.(1+2j)**2returns(-3+4j). - Ruby: use the
Complexclass. - C: include
complex.hand useIas the imaginary unit. See also How to work with complex numbers in C?
