What are const member functions in C++?

What are const member functions in C++?

Const member functions are functions that do not modify the object on which they are called. They are declared with the 'const' keyword after the function signature.

Can you give me an example of a const member function?

Sure! Here's an example:

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

In this example, getValue is a const member function.

What happens if I try to modify a member variable inside a const member function?

If you try to modify a member variable inside a const member function, the compiler will throw an error, as it violates the constness of the function.

Are there any benefits to using const member functions?

Yes, using const member functions can improve code safety and clarity, as it guarantees that the function will not modify the object's state.