Fread help, the problem of too depressed We have not encountered fread end of the document without reading it back to the true situation feof I call ftell problems immediately after admission guideline document, significantly less than the size of paper (size of the actual document is not), and even the end of the document said. . . . Gloomy ah We have not encountered similar problems, how to solve the country If there are two moves a time into another document with a different fp, we may have such a problem Feof (fp) is a macro itself will not amend fp information to be changed only in the event of actual fp literacy movement. For example, fp1 = fopen ( "file1", "r"); Fp2 = fopen ( "file1", "a"); //fp1, In a document is opened fp2 While first procedure (!feof (fp1)) (              ； ) 4003rd cycle end, the end of the document Then Using fprintf (fp2 that. " . . . . ". . . ); 4003rd documents apparently increased the time But feof (fp1) at this time is true. Because feof () macro is, as long as fp1 not changed and will never change. (Fp1 Change will only operate for a reading and, if read and write operations on the former feof () judgment is not a dead lock? ) If we still hope While (!feof (fp1)) (             ; ) 4003rd forever to read the new data. This is why not recommended feof (), document the reasons for the end of testing. [ Closed window ]