void* as argument in function

Question

Had someone suggest using void *context in a function, statement was the function doesn't need to know anything about the variable being passed. In the particular call. I changed some code from:

fun(type name);
to
fun(void *context);

How does this optimize or make the program better?

https://code.sololearn.com/cCctvUp8qtMf

Answer 1

Not sure about optimization or whether `void*` makes a program better. Just as I understand it, we pass a `void*` to a function to sort of "imitate" the polymorphism principal, in that we can use various types of data inside the function, we just need to dereference and cast the `void*` properly to a variable (of the actual type) we want to work with.

Actually, I'm not sure what benefit `void*` brings in this case, cause it seems that `float` be the only type that was used by the functions which uses `void*` parameters ...