表达式字符串无效

Question

我想要

 Console.WriteLine("Please enter a day of the week, e.g. Tue: ");
 today =  Console.ReadLine();
 GotoWork = string (today != SUN && today != SAT) ?

              Console.WriteLine("You have to go to work today...") ; 
              Console.WriteLine("Ahh... the weekend. No work!");'

编译并告诉我是否需要去上班，但它告诉我'（今天！= SUN＆amp;＆amp; today！= SAT）'是

invalid expression term for string.

Answer 1

用双引号SUN和SAT换行，因为这是表示字符串的方式。

today != "SUN" && today != "SAT"