摘要： feof's definition in stdio.h:#define _IOEOF 0x0010#define feof(_stream) ((_stream)->_flag & _IOEOF)From here we know only _flag equal to _IOEOF then feof() return 1. When file position indicator arrive to end of file, and read/write again, the fp->_flag set to _IOEOF, then call feof() 阅读全文