[Solved] What will be the output of this code?interface IAnimal { void Speak(); }class Dog : IAnimal { public void Speak() { Console.WriteLine("Woof");... | C Sharp (C#)

C Sharp (C#) - Interfaces

What will be the output of this code?

interface IAnimal { void Speak(); }
class Dog : IAnimal { public void Speak() { Console.WriteLine("Woof"); } }
class Program { static void Main() { IAnimal a = new Dog(); a.Speak(); } }

AWoof

BNo output

CCompile error

DRuntime error

Step-by-Step Solution

Solution:

Step 1: Understand interface and class implementation
Dog implements IAnimal and provides Speak method printing "Woof".
Step 2: Analyze Main method execution
Variable 'a' of type IAnimal references Dog instance; calling Speak prints "Woof".
Final Answer:
Woof -> Option A
Quick Check:
Interface method call outputs implemented method [OK]

Quick Trick: Interface reference calls implemented method at runtime [OK]

Common Mistakes:

MISTAKES

Expecting compile error due to interface variable
Thinking no output because interface has no body
Confusing runtime error with missing implementation

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What will be the output of this code?

Step 1: Understand interface and class implementation

Step 2: Analyze Main method execution

Final Answer:

Quick Check:

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