How do you interpret a users input and turn it into a math function?

Question

I am creating a graphing calculator and I need to figure out how to get the function the user wants. You know how on Desmos, they take the function the user enters and graphs it? I do not know how to take the input of lets say for example: ((x^3)+1)/6x and understand what the user just entered.

It would look something like this: function = input('f(x) = ')

I need it to handle users putting in stuff like sqrt() and other things for graphing as well. Thanks

Does this answer your question? [Smart design of a math parser?](https://stackoverflow.com/questions/114586/smart-design-of-a-math-parser) — Krish, May 13 '20 at 08:31

score 0 · Answer 1 · answered May 13 '20 at 08:31

0

Copying this post's answers:

A pretty good approach would involve two steps. The first step involves converting the expression from infix to postfix (e.g. via Dijkstra's shunting yard) notation. Once that's done, it's pretty trivial to write a postfix evaluator.

answered May 13 '20 at 08:31

Krish

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links are dead. – IjonTichy May 13 '20 at 08:34
thanks for the help but yeah, the links are dead :( – paris osuch May 13 '20 at 19:44

How do you interpret a users input and turn it into a math function?

1 Answers1