First, I'm going to do a sanity check strlen so we've used string length, strlen, before.
首先,我先做一个检查,我们以前使用过字符串长度函数。
So now, in this case, this code is going to, when we get here, check, and if you haven't seen that strange thing there, that exclamation point in bang computer-ese called a bang, it says x if ANS star ANS is not equal to x, all right?
那么现在,在这个例子中,当我们执行到这里,代码会去检查,如果你没有看到过这个奇怪的东西,这个感叹号在计算机学中被叫做,代码的意思是如果ANS的平方不等于?
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