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For example, in Listing 3, it would be good to receive an error message when doing square-root (-22.0) and exiting the program with return status -1 instead of returning -1.0.
例如,在清单3中,当执行square - root(- 22.0)时应该产生错误消息,程序退出,返回状态应该是- 1而不是- 1.0。
I like that answer. I then tested it on the square root of 9, and as I mentioned last time, I didn't find 3. I was not crushed.
我喜欢这个答案,然后我又试了试9的平方根,跟我上次说的一样,答案不是3。
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