Overloading and overriding

Simple definitions for overloading and overriding

Overloading (Compile Time Polymorphism):: Functions with same name and different parameters

public class A
{
    public void print(int x, int y)
    {
        Console.WriteLine("Parent Method");
    }
}

public class B : A
{
    public void child()
    {
        Console.WriteLine("Child Method");
    }

    public void print(float x, float y)
    {
        Console.WriteLine("Overload child method");
    }
}

Overriding (Run Time Polymorphism):: Functions in the extended class with same name and same parameters as in the base class, but with different behaviors.

public class A
{
    public virtual void print()
    {
        Console.WriteLine("Parent Method");
    }
}

public class B : A
{
    public void child()
    {
        Console.WriteLine("Child Method");
    }

    public override void print()
    {
        Console.WriteLine("Overriding child method");
    }
}

• Overloading = Multiple method signatures, same method name
• Overriding = Same method signature (declared virtual), implemented in sub classes

An astute interviewer would have followed up with:

What's the difference between overriding and shadowing?