There is no problem with these two function definitions:
void func(int x){/*…*/}
int func(double x){/*…*/ return something_double;}

Question

Quizplus · Accepted Answer

This is an example of function overloading, where two functions can have the same name but must differ in the type and/or number of arguments. Since one function takes an `int` and the other takes a `double`, this is allowed in languages like C++.

There Is No Problem with These Two Function Definitions