switch语句中有多种情况

问题描述:

有没有一种方法可以遍历多个case语句而不重复声明 case value:

Is there a way to fall through multiple case statements without stating case value: repeatedly?

我知道可行:

switch (value)
{
   case 1:
   case 2:
   case 3:
      // Do some stuff
      break;
   case 4:
   case 5:
   case 6:
      // Do some different stuff
      break;
   default:
       // Default stuff
      break;
}

但我想这样做:

switch (value)
{
   case 1,2,3:
      // Do something
      break;
   case 4,5,6:
      // Do something
      break;
   default:
      // Do the Default
      break;
}

我是从其他语言考虑这种语法吗?

Is this syntax I'm thinking of from a different language, or am I missing something?

您提到的第二种方法在C ++和C#中都没有语法。

There is no syntax in C++ nor C# for the second method you mentioned.

第一种方法没有错。但是,如果范围很大,则只需使用一系列if语句。

There's nothing wrong with your first method. If however you have very big ranges, just use a series of if statements.