You want to create a computed property IsAdult in a Person class that returns true if Age is 18 or more, otherwise false. Which code correctly implements this?

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C Sharp (C#) - Properties and Encapsulation

You want to create a computed property IsAdult in a Person class that returns true if Age is 18 or more, otherwise false. Which code correctly implements this?

Apublic bool IsAdult() { return Age >= 18; }

Bpublic bool IsAdult { get { return Age > 18; } }

Cpublic bool IsAdult { get; set; } = Age >= 18;

Dpublic bool IsAdult => Age >= 18;

Step-by-Step Solution

Solution:

Step 1: Understand requirement for computed property
IsAdult should return true if Age is 18 or more, false otherwise, without storing a value.
Step 2: Check each option
public bool IsAdult => Age >= 18; uses expression-bodied property correctly with >= 18. public bool IsAdult { get { return Age > 18; } } uses > 18 (wrong condition). public bool IsAdult { get; set; } = Age >= 18; tries to set property with Age comparison, which is invalid. public bool IsAdult() { return Age >= 18; } is a method, not a property.
Final Answer:
public bool IsAdult => Age >= 18; -> Option D
Quick Check:
Age >= 18 for IsAdult [OK]

Quick Trick: Use => with condition for simple computed properties [OK]

Common Mistakes:

MISTAKES

Using > instead of >= for age check
Trying to set computed property value
Confusing methods with properties

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You want to create a computed property IsAdult in a Person class that returns true if Age is 18 or more, otherwise false. Which code correctly implements this?

Step 1: Understand requirement for computed property

Step 2: Check each option

Final Answer:

Quick Check:

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