[Solved] Which of the following is the correct way to declare a read-only computed property in C#? - Ans: public int Area { get => Width * Height; } | C Sharp (C#)

C Sharp (C#) - Properties and Encapsulation

Which of the following is the correct way to declare a read-only computed property in C#?

Apublic int Area() => Width * Height;

Bpublic int Area { get => Width * Height; }

Cpublic int Area { get; set; } = Width * Height;

Dpublic int Area { set => Width * Height; }

Step-by-Step Solution

Solution:

Step 1: Understand read-only computed property syntax
Read-only computed properties have a get accessor that returns a calculated value.
Step 2: Check options
public int Area { get => Width * Height; } correctly uses get accessor with expression. public int Area { set => Width * Height; } wrongly uses set accessor. public int Area { get; set; } = Width * Height; uses auto-property with initializer, which is not computed. public int Area() => Width * Height; is a method, not a property.
Final Answer:
public int Area { get => Width * Height; } -> Option B
Quick Check:
Read-only computed property = get accessor only [OK]

Quick Trick: Use get accessor for read-only computed properties [OK]

Common Mistakes:

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Which of the following is the correct way to declare a read-only computed property in C#?