CBridge(string strName = "CBuilting", float i = 0.0){ CBuilt(strName); length = i; } //显示strName重定义 CBridge(string strName = "CBuilti
阅读背景：
这两行代码有什么区别？为什么第一行显示strName重定义
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CBridge(string strName = "CBuilting", float i = 0.0){ CBuilt(strName); length = i; } //显示strName重定义 CBridge(string strName = "CBuilti
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