无中断的 switch-case 语句
根据我正在阅读的这本书:
According to this book I am reading：
Q 如果我在 switch-case 语句中省略了 break 会发生什么?
Q What happens if I omit a break in a switch-case statement?
A break 语句使程序执行能够退出 switch 构造.没有它，执行将继续评估以下 case 语句.
A The break statement enables program execution to exit the switch construct. Without it, execution continues evaluating the following case statements.
假设我的代码看起来像
switch (option}{
case 1:
do A;
case 2:
do B;
default:
do C;
break;
}
这是否意味着如果我选择案例 1，A 和 C 就完成了.如果我选择案例 2，B 和 C 就完成了.如果我都不选择，那么只有 C 完成.
Does this mean if I choose case 1, the A and C are done. If I choose case 2, B and C are done. If i choose neither, then only C is done.
如果是这样，如果我们在 do C 之后省略了 break 会发生什么.
if so, what happens if we omit the break after do C.
我认为这些都是不好的编程习惯，但我很好奇会发生什么来更深入地了解它是如何工作的.谢谢
I assume these are bad programming practice, but I am curious what would happen to get a deeper understanding how it all works. Thanks
推荐答案
break 的作用类似于 goto 命令.或者，作为一个更好的例子，就像在 void 函数中使用 return 一样.既然到了尽头，有没有没有关系.不过，我确实喜欢包含它.
The break acts like a goto command. Or, as a better example, it is like when using return in a void function. Since it is at the end, it makes no difference whether it is there or not. Although, I do like to include it.
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