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程序出错:The variable "y" is being used without being initialized.

题目详情
程序出错:The variable 'y' is being used without being initialized.
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答案和解析
用Microsoft Visual Studio 2010调试的,程序生成成功了,但是运行的过程中就出现这个The variable 'y' is being used without being initialized.,位置就指在return(y)这里