Overloading vs Overriding

Difference Between Overloading and Overriding in C#

1. Method Overloading

• Same method name, different parameters.
• Occurs within the same class.
• Compile-time (static) polymorphism.
• Parameters must change (type, number, or order).

C# Example:

class Calculator { public int Add(int a, int b) { return a + b; } public double Add(double a, double b) { return a + b; } public int Add(int a, int b, int c) { return a + b + c; } }

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2. Method Overriding

• Same method name, same parameters.
• Occurs in different classes using inheritance.
• Runtime (dynamic) polymorphism.
• Uses virtual and override keywords.

C# Example:

class Car { public virtual void Drive() { Console.WriteLine("Car is driving"); } } class SportsCar : Car { public override void Drive() { Console.WriteLine("SportsCar is driving fast!"); } }