[Solved] Identify the problem in this C# code:class Base { public virtual void Display() { Console.WriteLine("Base Display"); } } class Derived : Base { public void Display() { Console.... | C Sharp (C#)

C Sharp (C#) - Inheritance

Identify the problem in this C# code:

class Base { public virtual void Display() { Console.WriteLine("Base Display"); } } class Derived : Base { public void Display() { Console.WriteLine("Derived Display"); } } class Program { static void Main() { Base b = new Derived(); b.Display(); } }

ADerived's Display() should use override keyword

BBase's Display() should not be virtual

CNo problem, output is "Derived Display"

DCompilation error due to missing base call

Step-by-Step Solution

Solution:

Step 1: Check method overriding rules
Derived's Display() hides Base's virtual method but lacks override keyword, so it is method hiding, not overriding.
Step 2: Consequence of missing override
Calling b.Display() calls Base's method because Derived's method does not override it properly.
Final Answer:
Derived's Display() should use override keyword -> Option A
Quick Check:
Override keyword needed for proper method override [OK]

Quick Trick: Use override keyword to properly override virtual methods [OK]

Common Mistakes:

MISTAKES

Missing override keyword causes method hiding
Assuming virtual keyword is optional in base
Expecting derived method to run without override

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More C Sharp (C#) Quizzes

Identify the problem in this C# code:

Step 1: Check method overriding rules

Step 2: Consequence of missing override

Final Answer:

Quick Check:

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