[Solved] Consider this C# class snippet: class Person { private int age; public int Age { get => age; set { if (value var p = new Person(); p.Age = -5; | C Sharp (C#)

C Sharp (C#) - Properties and Encapsulation

Consider this C# class snippet:

class Person {
  private int age;
  public int Age {
    get => age;
    set {
      if (value < 0) throw new ArgumentException("Age cannot be negative");
      age = value;
    }
  }
}

What happens if you run this code?
var p = new Person();
p.Age = -5;

AThe age is set to -5 without error

BAn ArgumentException is thrown with message 'Age cannot be negative'

CThe program crashes with a NullReferenceException

DThe setter ignores the negative value and leaves age unchanged

Step-by-Step Solution

Solution:

Step 1: Analyze setter validation
The setter checks if value is less than 0 and throws ArgumentException if true.
Step 2: Apply to given code
Setting Age to -5 triggers the exception because -5 < 0.
Final Answer:
An ArgumentException is thrown with message 'Age cannot be negative' -> Option B
Quick Check:
Negative age triggers ArgumentException [OK]

Quick Trick: Setter throws exception on invalid input [OK]

Common Mistakes:

MISTAKES

Assuming negative value is accepted
Confusing exception type thrown
Thinking setter silently ignores invalid values

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More C Sharp (C#) Quizzes

Consider this C# class snippet:

Step 1: Analyze setter validation

Step 2: Apply to given code

Final Answer:

Quick Check:

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