<?xml version="1.0" encoding="utf-8"?>+
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->+
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<!-- This component and the accompanying materials are made available under the terms of the License +
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"Eclipse Public License v1.0" which accompanies this distribution, +
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->+
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<!-- Initial Contributors:+
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    Nokia Corporation - initial contribution.+
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Contributors: +
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-->+
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<!DOCTYPE concept+
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">+
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<concept id="GUID-788031A5-75C1-420E-9E2B-71E09FF08ADF" xml:lang="en"><title>Example+
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using <codeph>E32Main()</codeph></title><shortdesc/><prolog><metadata><keywords/></metadata></prolog><conbody>+
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<p>A simple example using <codeph>E32Main()</codeph> as an entry point is+
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described below. The example writes a text to a file. </p>+
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<ul>+
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<li><p>Modify the MMP file as mentioned earlier.</p></li>+
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<li><p>Create a trap handler using <xref href="GUID-17AC7BAD-1C03-3729-BCC6-F5B28B32E99D.dita"><apiname>CTrapCleanup</apiname></xref>.</p></li>+
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<li><p>Call the method within <codeph>TRAPD</codeph>.</p></li>+
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<li><p>Delete the trap handler. </p></li>+
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</ul>+
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<codeblock xml:space="preserve">#include &lt;stdio.h&gt;+
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#include &lt;string.h&gt;+
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#include &lt;e32base.h&gt;+
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+
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void doExampleL(void)+
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{+
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    FILE* fd;+
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    char* fileName = "C:\\test.txt";+
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    char *buf = "Hello world from E32Main()";+
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    fd = fopen(fileName, "w");+
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    if (fd == NULL)+
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    {+
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        printf("Unable to open the file (%s)", fileName);+
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        return;+
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    }+
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    if (fwrite(buf, sizeof(char), strlen(buf), fd) &lt; 0 )+
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    {+
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        perror("write fails.");+
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    }+
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    fclose(fd);+
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}+
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+
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GLDEF_C TInt E32Main()+
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    {+
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    CTrapCleanup* cleanup=CTrapCleanup::New();+
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    TRAPD(error,doExampleL());+
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    delete cleanup; // destroy cleanup stack+
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    return 0; // and return+
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    }+
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</codeblock>+
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</conbody></concept>+
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