Properties

Properties

Properties are the idiomatic C# way to expose data with optional validation:

class Person {
    private int _age;

    public string Name { get; set; }  // auto-property

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

    public Person(string name, int age) {
        Name = name;
        Age = age;
    }
}

Computed Properties

A property with only a get computes its value on the fly:

class Circle {
    public double Radius { get; set; }
    public double Area => Math.PI * Radius * Radius;      // computed
    public double Diameter => 2 * Radius;                 // computed
}

Init-Only Properties (C# 9+)

class Point {
    public int X { get; init; }  // set only in constructor or init
    public int Y { get; init; }
}
var p = new Point { X = 3, Y = 4 };

Your Task

Create a Temperature class with:

• double Celsius { get; set; } property
• A computed double Fahrenheit property that returns Celsius * 9.0 / 5.0 + 32
• A constructor taking a celsius value