//C# Optionele Argumenten - Optional Procedures en Functies
public class Example1 {
    void Main() {
        Console.WriteLine(this.GetPower(3, 3));
        Console.WriteLine(this.GetPower(3));
        Console.ReadLine();
    }
    void GetPower(int @base, int exponent) {
        GetPower = (@base + exponent);
    }
}
public class Example2 {
    void Main() {
        this.ShowSum(1);
        this.ShowSum(2, 3);
        this.ShowSum(4, 0, 5);
        this.ShowSum(6, 7, 8);
        this.ShowSum(1);
        this.ShowSum(2, 3);
        this.ShowSum(4, 5);
        this.ShowSum(6, 7, 8);
        this.ShowSum(5, 4);
        this.ShowSum(8, 7, 6);
        this.ShowSum(4, 5);
        Console.ReadLine();
    }
    void ShowSum(int value1, int value2, int value3) {
        Console.WriteLine(((value1 + value2) 
                        + value3));
    }
}
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