EOF是什么东西啊

[诸葛不空城]

看到说文件尾有eof表示文件结束，这个eof是一个表示结束的字符还是就是表示一个读到头的信号

[brookmill]

文件里没有EOF这个东西，它不是表示结束的字符。就是一个信号，读取文件的函数发现文件结束了就会返回这么个值

[mujiok2003]

End-of-File It is a macro definition of type int that expands into a negative integral constant expression (generally, -1). It is used as the value returned by several functions in header <cstdio> to indicate that the End-of-File has been reached or to signal some other failure conditions. It is also used as the value to represent an invalid character. In C++, this macro corresponds to the value of char_traits<char>::eof().