一个有趣但不重要的发现是，在强有力的符号之前回答问卷和投票并不相同。
Which is interesting, but might not be that important. Answering polling questions in the presence of a powerful symbol is not the same as voting.
在像国旗这样强有力的符号面前回答民意调查的问题与投票不同。
Answering polling questions in the presence of a powerful symbol is not the same as voting.
在回答你的具体错误信息的链接告诉你它不能为主要功能，找到符号。
In answer to your specific error message - the linker is telling you that it can't find the symbol for the main function.
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