What are some examples of const methods in C++?

What are some examples of const methods in C++?

In C++, const methods are member functions that do not modify the object. For example:

class MyClass {
public:
    int getValue() const {
        return value;
    }
private:
    int value;
};

Here, getValue() is a const method.

Can you explain why we use const methods?

Const methods are used to ensure that the method does not change the state of the object. This helps in maintaining const-correctness, making the code safer and easier to understand.

Are there any limitations to using const methods?

Yes, const methods cannot modify any member variables of the class unless they are marked as mutable. This can limit their functionality in some cases.

Can you give another example of a const method?

Sure! Here's another example:

class Point {
public:
    int getX() const {
        return x;
    }
private:
    int x;
};

In this case, getX() is a const method that returns the value of x without modifying it.