using System.Collections.Generic;
using System.Threading.Tasks;
public static void Main(string[] args)
Console.WriteLine($"B: {b}");
Console.WriteLine($"C: {c}");
Type t1 = typeof(string);
Console.WriteLine(t1.FullName);
foreach(var m in t2.GetMethods())
Console.WriteLine(m.ToString());
Console.WriteLine($"Type of a: {t3}");