What are default constructors in C++?

What are default constructors in C++?

Default constructors are special constructors that can be called without any arguments. They initialize objects with default values.

Can you give me an example of a default constructor?

Sure! Here's a simple example:

class MyClass {
public:
    MyClass() { // Default constructor
        // Initialization code
    }
};

This constructor initializes MyClass objects without requiring parameters.

What happens if I don't define a default constructor?

If you don't define a default constructor and your class has other constructors, the compiler won't generate a default one. This can lead to errors if you try to create an object without providing arguments.

Are default constructors automatically generated?

Yes, if you don't define any constructors, the compiler automatically generates a default constructor for you, which initializes members to their default values.