你缺少一个 { 和一个 } -- 没有它们，你的 else 子句就只是那一行 string temp;.

You're missing a { and a } -- without them, your else clause is just that one line string temp;.

使用自动重排代码的编辑器可以帮助您了解此类情况.

Using an editor that reflows your code automatically can help you see such things.