Try It Yourself - SyntaxStudy Editor

HTML / CSS / JS

// Method overloading, expression-bodied members, and local functions

static class MathUtils
{
    // Method overloading — same name, different signatures
    public static int Add(int a, int b)         => a + b;
    public static double Add(double a, double b) => a + b;
    public static int Add(int a, int b, int c)  => a + b + c;

// Full-body method
    public static double HypotenuseLength(double a, double b)
    {
        double sumSquares = (a * a) + (b * b);
        return Math.Sqrt(sumSquares);
    }

// Generic method
    public static T Clamp<T>(T value, T min, T max) where T : IComparable<T>
    {
        if (value.CompareTo(min) < 0) return min;
        if (value.CompareTo(max) > 0) return max;
        return value;
    }
}

Console.WriteLine(MathUtils.Add(1, 2));          // 3
Console.WriteLine(MathUtils.Add(1.5, 2.5));      // 4.0
Console.WriteLine(MathUtils.Add(1, 2, 3));        // 6
Console.WriteLine(MathUtils.HypotenuseLength(3, 4)); // 5

// Local function example
static string FormatName(string first, string? middle, string last)
{
    return $"{Normalise(first)} {(middle is null ? "" : Normalise(middle) + " ")}{Normalise(last)}".Trim();

// Local function — only visible inside FormatName
    static string Normalise(string s) =>
        string.IsNullOrWhiteSpace(s) ? "" : char.ToUpper(s[0]) + s[1..].ToLower();
}

Console.WriteLine(FormatName("alice", null, "SMITH"));    // Alice Smith
Console.WriteLine(FormatName("bob", "james", "jones"));   // Bob James Jones