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

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

In C++, a const object is an object whose value cannot be changed after it is initialized. For example:

const int x = 10;
const std::string name = "Alice";
const double pi = 3.14;

These objects cannot be modified after their declaration.

Can you explain why we use const objects?

We use const objects to protect data from being modified accidentally, ensuring that certain values remain constant throughout the program. This can help prevent bugs and improve code readability.

Are there any limitations to using const objects?

Yes, const objects cannot be modified after initialization, which means you cannot change their values. However, you can still call non-modifying member functions on const objects.

Can you give an example of a const object in a class?

Certainly! Here's an example:

class Circle {
public:
    const double radius;
    Circle(double r) : radius(r) {}
};

In this case, the radius of the Circle object cannot be changed after it is set in the constructor.