using System.Reflection.Emit;

internal class Program
{
    private static void Main()
    {
        DynamicMethod add = new("Add", typeof(int), [typeof(int), typeof(int)]);
        ILGenerator generator = add.GetILGenerator();

        generator.Emit(OpCodes.Ldarg_0);
        generator.Emit(OpCodes.Ldarg_1);
        generator.Emit(OpCodes.Add);
        generator.Emit(OpCodes.Ret);

        var c = add.Invoke(null, [2, 1]) as int?;

        Console.WriteLine($"2 + 1 = {c}");
    }
}