using System; namespace FifthLesson_Struct { class Program { str...

using System; namespace FifthLesson { enum days{ Monday=1, T...

using System; namespace FourthLesson { class Program { static vo...

using System; using System.Collections.Generic; using System.Linq; using...

using System; using System.Collections.Generic; using System.Linq; using...

//引入系統(tǒng)的命名空間 using System; using System.Collections.Generic; using System...