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<?xml version="1.0" encoding="UTF-8"?>
<helpdocument version="1.0">
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<meta>
<topic id="textsbasicshared03020301xml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">Eof Function</title>
<filename>/text/sbasic/shared/03020301.xhp</filename>
</topic>
</meta>
<body>
<section id="eof">
<bookmark xml-lang="en-US" branch="index" id="bm_id3154598">
<bookmark_value>Eof function</bookmark_value>
</bookmark>
<paragraph id="hd_id3154598" role="heading" level="1" xml-lang="en-US"><link href="text/sbasic/shared/03020301.xhp" name="Eof Function">Eof Function</link></paragraph>
<paragraph id="par_id3147182" role="paragraph" xml-lang="en-US">Determines if the file pointer has reached the end of a file.</paragraph>
</section>
<paragraph id="hd_id3149119" role="heading" level="2" xml-lang="en-US">Syntax:</paragraph>
<bascode>
<paragraph id="par_id3147399" role="bascode" xml-lang="en-US">Eof (intexpression As Integer)</paragraph>
</bascode>
<paragraph id="hd_id3153539" role="heading" level="2" xml-lang="en-US">Return value:</paragraph>
<paragraph id="par_id3156027" role="paragraph" xml-lang="en-US">Bool</paragraph>
<paragraph id="hd_id3152924" role="heading" level="2" xml-lang="en-US">Parameters:</paragraph>
<paragraph id="par_id3153990" role="paragraph" xml-lang="en-US"> <emph>Intexpression:</emph> Any integer expression that evaluates to the number of an open file.</paragraph>
<paragraph id="par_id3153527" role="paragraph" xml-lang="en-US">Use EOF to avoid errors when you attempt to get input past the end of a file. When you use the Input or Get statement to read from a file, the file pointer is advanced by the number of bytes read. When the end of a file is reached, EOF returns the value "True" (-1).</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#errorcode"/>
<embed href="text/sbasic/shared/00000003.xhp#err5"/>
<embed href="text/sbasic/shared/00000003.xhp#err52"/>
<paragraph id="hd_id3154046" role="heading" level="2" xml-lang="en-US">Example:</paragraph>
<bascode>
<paragraph id="par_idm1341592032" role="bascode" localize="false" xml-lang="en-US">Sub ExampleWorkWithAFile</paragraph>
<paragraph id="par_idm1341590784" role="bascode" localize="false" xml-lang="en-US">Dim iNumber As Integer</paragraph>
<paragraph id="par_idm1341589552" role="bascode" localize="false" xml-lang="en-US">Dim sLine As String</paragraph>
<paragraph id="par_idm1341588320" role="bascode" localize="false" xml-lang="en-US">Dim aFile As String</paragraph>
<paragraph id="par_idm1341587088" role="bascode" localize="false" xml-lang="en-US">Dim sMsg As String</paragraph>
<paragraph id="par_idm1341585856" role="bascode" localize="false" xml-lang="en-US"> aFile = "c:\data.txt"</paragraph>
<paragraph id="par_idm1341584608" role="bascode" localize="false" xml-lang="en-US"> iNumber = Freefile</paragraph>
<paragraph id="par_idm1341583376" role="bascode" localize="false" xml-lang="en-US"> Open aFile For Output As #iNumber</paragraph>
<paragraph id="par_id3153360" role="bascode" xml-lang="en-US"> Print #iNumber, "First line of text"</paragraph>
<paragraph id="par_id3148797" role="bascode" xml-lang="en-US"> Print #iNumber, "Another line of text"</paragraph>
<paragraph id="par_idm1341578592" role="bascode" localize="false" xml-lang="en-US"> Close #iNumber</paragraph>
<paragraph id="par_idm1341577360" role="bascode" localize="false" xml-lang="en-US"> iNumber = Freefile</paragraph>
<paragraph id="par_idm1341576128" role="bascode" localize="false" xml-lang="en-US"> Open aFile For Input As iNumber</paragraph>
<paragraph id="par_idm1341574880" role="bascode" localize="false" xml-lang="en-US"> While Not eof(iNumber)</paragraph>
<paragraph id="par_idm1341573632" role="bascode" localize="false" xml-lang="en-US"> Line Input #iNumber, sLine</paragraph>
<paragraph id="par_idm1341572384" role="bascode" localize="false" xml-lang="en-US"> If sLine <>"" Then</paragraph>
<paragraph id="par_idm1341571136" role="bascode" localize="false" xml-lang="en-US"> sMsg = sMsg & sLine & chr(13)</paragraph>
<paragraph id="par_idm1341569872" role="bascode" localize="false" xml-lang="en-US"> End If</paragraph>
<paragraph id="par_idm1341568640" role="bascode" localize="false" xml-lang="en-US"> Wend</paragraph>
<paragraph id="par_idm1341567408" role="bascode" localize="false" xml-lang="en-US"> Close #iNumber</paragraph>
<paragraph id="par_idm1341566176" role="bascode" localize="false" xml-lang="en-US"> MsgBox sMsg</paragraph>
<paragraph id="par_idm1341564944" role="bascode" localize="false" xml-lang="en-US">End Sub</paragraph>
</bascode>
</body>
</helpdocument>
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