[C#] 字串插值(C# 6.0 新功能)

只要在字串開頭加上$，在字串內用{變數}，會以便數值取代。可沿用既有的格式化字串符號

public static void Main(string[] args)
{
   string FirstName = "John";
   string LastName = "Lin";
   double PI = 3.141596825;
   DateTime date = DateTime.Now;

   string FullName = $"{FirstName} {LastName} {PI:f2} {date:yyyy-MM-dd}";
   Console.WriteLine(FullName);
}