You want to create a property Age that only allows values between 0 and 120. Which implementation correctly enforces this using get and set accessors?
hard🚀 Application Q15 of Q15
C Sharp (C#) - Properties and Encapsulation
You want to create a property Age that only allows values between 0 and 120. Which implementation correctly enforces this using get and set accessors?
Aprivate int age; public int Age { get { return age; } set { if (value >= 0 && value <= 120) age = value; } }
Bpublic int Age { get; set; } // No validation needed
Cprivate int age; public int Age { get { return age; } set { age = value; } }
Dprivate int age; public int Age { get { return age; } set { if (value > 0) age = value; } }
Step-by-Step Solution
Solution:
Step 1: Check validation logic in set accessor
private int age; public int Age { get { return age; } set { if (value >= 0 && value <= 120) age = value; } } checks if value is between 0 and 120 before assigning it to the private field.
Step 2: Compare other options
The auto-implemented property has no validation. The simple backing field assignment lacks checks. The partial validation only checks if value > 0, missing the upper limit.
Final Answer:
private int age; public int Age { get { return age; } set { if (value >= 0 && value <= 120) age = value; } } -> Option A
Quick Check:
Set accessor validates range 0-120 = B [OK]
Quick Trick:Use if condition in set to validate value range [OK]
Common Mistakes:
MISTAKES
Not validating upper limit
Assigning value without checks
Assuming auto-properties validate automatically
Master "Properties and Encapsulation" in C Sharp (C#)
9 interactive learning modes - each teaches the same concept differently
