When you're all out of specific cases and you want to handle everything else, you literally say "default:" And here I could end the program with break, but it's kind of unnecessary because once I'm at the bottom of the curly braces, that's it.

当它不在你列出的所有情况中,为了处理其他的情况，你可以用“default：“,这里我可以用break来终止这段代码，但是它是有点,不必要的，因为我已经在这个花括号的,底部了，就这样了。

哈佛公开课 - 计算机科学课程节选

So in other words, if you terminate these lines early, if you terminate the four loop early, if you terminate an if condition early with that semicolon, the code may very well work; and this is a common source -- of frustration and conundrum because you don't -- because your code looks right and yet it's misbehaving, but that semicolon means stop looking for subsequent lines of related code.

换句话说，如果你用分号过早的终止了这些代码行，如果你过早地终止了那个for循环，如果如此,一个if条件，代码可能可以运行，这就是,挫折和问题产生的源头，因为你没有-,因为你的代码看起来是正确的，但是运行是错误的，那个分号的意思是,停止寻找后面相关的代码。

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