[Solved] Find the error in this C# code:class Parent { public void Greet() { Console.WriteLine("Hello from Parent"); } } class Child : Parent { public void Greet() { Console.WriteLine("Hello from Child");... | C Sharp (C#)

C Sharp (C#) - Inheritance

Find the error in this C# code:

class Parent { public void Greet() { Console.WriteLine("Hello from Parent"); } } class Child : Parent { public void Greet() { Console.WriteLine("Hello from Child"); } } class Program { static void Main() { Parent p = new Child(); p.Greet(); } }

AError: Greet() must be virtual in Parent to override

BNo error, output is "Hello from Child"

CNo error, output is "Hello from Parent"

DError: Child cannot have method with same name

Step-by-Step Solution

Solution:

Step 1: Check method hiding vs overriding
Parent's Greet() is not virtual, so Child's Greet() hides it but does not override.
Step 2: Analyze method call on Parent reference
Calling p.Greet() calls Parent's method because method is not virtual, so output is "Hello from Parent".
Final Answer:
No error, output is "Hello from Parent" -> Option C
Quick Check:
Non-virtual method call = base method runs [OK]

Quick Trick: Non-virtual methods call base version even if object is derived [OK]

Common Mistakes:

MISTAKES

Expecting Child's method to run without virtual keyword
Thinking code causes compilation error
Confusing method hiding with overriding

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More C Sharp (C#) Quizzes

Find the error in this C# code:

Step 1: Check method hiding vs overriding

Step 2: Analyze method call on Parent reference

Final Answer:

Quick Check:

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