Can we convert string input to a mathematical function ?

Question

I want to create a program to solve mathematical function . How to do it?

Answer 1

In c++.....Idk
But if java
//Thanks to someone I forgot
ScriptEngine(new ScriptEngineManager().getEngineByName("JavaScript")).eval("1+3")
js :
eval("1+3")

C++ I only know how to convert string to number.sir sorry

Answer 2

No need to thanks. That is not the answer of your question yet

Answer 3

There is a function atoi () in C/C++ for such conversion.

Answer 4

thanks