2回答

• 

  浅墨1

  2015-04-19 16:17:42

  已采纳

  如果i++放在sum=sum+i前那么i的初始值就等于2啦，所以应放在之后。

  1 2

  慕函数771...

  非常感谢！

  2015-06-28 16:32:48

  共 1 条回复 >

• 

  慕神5269880

  2022-03-10 00:43:37

  
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