[Solved] Identify the issue in this C# code:class Fish { public virtual void Swim() { } } class Shark : Fish { public void Swim() { } } | C Sharp (C#)

C Sharp (C#) - Inheritance

Identify the issue in this C# code:

class Fish { public virtual void Swim() { } } class Shark : Fish { public void Swim() { } }

ASwim method in Shark should use 'override' keyword

BFish class cannot have virtual methods

CShark class must be abstract

DSwim method in Fish should be static

Step-by-Step Solution

Solution:

Step 1: Understand virtual and override
In C#, to override a virtual method from a base class, the derived class method must use the 'override' keyword.
Step 2: Analyze the code
Fish declares Swim() as virtual. Shark defines Swim() without 'override', which hides the base method instead of overriding it.
Step 3: Identify the error
Missing 'override' keyword in Shark's Swim() method is the issue.
Final Answer:
A -> Option A
Quick Check:
Override virtual methods with 'override' keyword [OK]

Quick Trick: Override virtual methods using 'override' keyword [OK]

Common Mistakes:

MISTAKES

Master "Inheritance" in C Sharp (C#)

9 interactive learning modes - each teaches the same concept differently

More C Sharp (C#) Quizzes

Identify the issue in this C# code: