[Solved] What is wrong with this code snippet?class Animal { public virtual void Speak() { Console.WriteLine("Animal speaks"); } } class Dog : Animal { public void Speak() { Console.WriteLine("Dog barks");... | C Sharp (C#)

C Sharp (C#) - Polymorphism and Abstract Classes

What is wrong with this code snippet?

class Animal {
    public virtual void Speak() {
        Console.WriteLine("Animal speaks");
    }
}
class Dog : Animal {
    public void Speak() {
        Console.WriteLine("Dog barks");
    }
}

Animal a = new Dog();
a.Speak();

ADog's Speak method should be marked override to override base virtual method.

BAnimal's Speak method should not be virtual.

CDog's Speak method should be static.

DNo error; code runs and prints "Dog barks".

Step-by-Step Solution

Solution:

Step 1: Check method overriding rules
To override a virtual method, the child method must use override keyword.
Step 2: Analyze given code
Dog's Speak method lacks override, so it hides base method instead of overriding. Virtual dispatch calls base method.
Final Answer:
Dog's Speak method should be marked override to override base virtual method. -> Option A
Quick Check:
Override keyword needed to override virtual method [OK]

Quick Trick: Override keyword required to override virtual method [OK]

Common Mistakes:

MISTAKES

Forgetting override keyword in child method
Assuming method hides base automatically
Confusing virtual and override keywords

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What is wrong with this code snippet?

Step 1: Check method overriding rules

Step 2: Analyze given code

Final Answer:

Quick Check:

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