How to compare objects?

Question

OOP

Let's say I have objects in the array, and there is also a function that takes one object as a parameter. It must go through the array and find an identical object. What is the best way to compare objects in this case?

Answer 1

Formulate a condition for the equality of objects, add an appropriate operator to them. PROFIT!

Answer 2

well, if your objects are in the array, write a comparison constructor to them and that's it

Answer 3

Enter comparison operators:

friend bool operator==(const YourClass& left, const YourClass& right);
friend bool operator!=(const YourClass& left, const YourClass& right);