What are const methods in C++?

What are const methods in C++?

Const methods in C++ are member functions that do not modify the object they belong to. They are declared with the 'const' keyword.

Can you give me an example of a const method?

Sure! Here's a simple example:

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

In this example, getValue is a const method.

Why should I use const methods?

Using const methods helps ensure that your code does not accidentally modify the state of an object, which can lead to bugs. It also allows for better optimization by the compiler.

Are there any limitations to const methods?

Yes, const methods cannot modify any member variables of the class unless they are marked as mutable. They also cannot call non-const methods.