[Solved] The following code causes a compilation error. What is the main reason?... What is the main reason?abstract class Shape { public abstract void Draw(); | C Sharp (C#)

C Sharp (C#) - Interfaces

The following code causes a compilation error. What is the main reason?

abstract class Shape {
  public abstract void Draw();
}

class Circle : Shape {
  public void Draw() {
    Console.WriteLine("Drawing Circle");
  }
}

ADraw() method must be static in Circle.

BAbstract classes cannot have abstract methods.

CCircle cannot inherit from Shape because Shape is abstract.

DCircle must declare Draw() as override, not just public.

Step-by-Step Solution

Solution:

Step 1: Identify abstract method implementation rules
When a class inherits an abstract method, it must override it using the override keyword.
Step 2: Check Circle class method
The Draw() method in Circle is declared as public void Draw() but missing override, causing a compile error.
Final Answer:
Circle must declare Draw() as override, not just public. -> Option D
Quick Check:
Override abstract method = must use 'override' keyword [OK]

Quick Trick: Override abstract methods with 'override' keyword [OK]

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The following code causes a compilation error. What is the main reason?