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<concept id="GUID-F51062B0-90BB-5659-9F23-2FF25116D78A" xml:lang="en"><title>Porting Tutorials</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>This topic describes how to port some C applications to Symbian platform. </p> <p>It uses <filepath>Hello</filepath>, <filepath>ConsoleApp</filepath> and <filepath>GUIApp</filepath> examples . The first two are simple console-based examples. The third is a command-line driven program which has been converted into a standard Symbian application. It also describes typical problems which may be encountered when porting C code to Symbian platform, including the restriction on writeable data in DLLs. These example codes can be found in directory <filepath>examples\stdlib\</filepath>. </p> <p> <b>NOTE</b>: These examples may not be present on all Symbian platform SDKs. </p> <p>Some of the code for the second two examples was taken from the FreeBSD source code. For information on FreeBSD, see <xref scope="external" href="http://www.freebsd.org">http://www.freebsd.org</xref>. </p> </conbody></concept>