Which of the following is the correct way to override a method named Calculate in a derived class in C#?

easy📝 Syntax Q3 of 15

C Sharp (C#) - Polymorphism and Abstract Classes

Which of the following is the correct way to override a method named Calculate in a derived class in C#?

Apublic int Calculate() { return 0; }

Bpublic new int Calculate() { return 0; }

Cpublic virtual int Calculate() { return 0; }

Dpublic override int Calculate() { return 0; }

Step-by-Step Solution

Solution:

Step 1: Identify override syntax
To override a base class virtual method, the derived class method must use the override keyword.
Step 2: Analyze options
public override int Calculate() { return 0; } correctly uses override. public new int Calculate() { return 0; } uses new which hides the base method but does not override. public virtual int Calculate() { return 0; } declares a new virtual method, not an override. public int Calculate() { return 0; } is a normal method without override.
Final Answer:
public override int Calculate() { return 0; } -> Option D
Quick Check:
Override requires 'override' keyword [OK]

Quick Trick: Use 'override' keyword to override methods [OK]

Common Mistakes:

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