无效的表达式术语字符串

Question

我正在尝试获取

 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 && 今天！= SAT）"是一个

invalid expression term for string.

Answer 1

用双引号括起来SUN和SAT，因为这是字符串的表示方式。

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