Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/sgllist_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Base/ArraysAndLists/linkedlist/sgllist/src/sgllist.cpp</h1><a href="sgllist_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// Contains the E32Main() function, which executes the example.</span>
<a name="l00015"></a>00015 <span class="comment">// The example demonstrates the use of the TSglQue class, which represents</span>
<a name="l00016"></a>00016 <span class="comment">// a singly linked list.</span>
<a name="l00017"></a>00017 <span class="comment">// The user enters a long number, which is stored as linked list of digits</span>
<a name="l00018"></a>00018 <span class="comment">// of the number. The user can edit this number by adding digits to the list</span>
<a name="l00019"></a>00019 <span class="comment">// or removing digits from the list.</span>
<a name="l00020"></a>00020 <span class="comment">// The example displays the sum of all digits of this number on the console.</span>
<a name="l00021"></a>00021 <span class="comment">//</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023
<a name="l00024"></a>00024
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="_i_p_c_2condvar_2condvarglobal_2inc_2adder_8h.html">adder.h</a>"</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 LOCAL_D CConsoleBase* console;
<a name="l00032"></a>00032
<a name="l00033"></a>00033 LOCAL_C <span class="keywordtype">void</span> DoStartL();
<a name="l00034"></a>00034 LOCAL_C <span class="keywordtype">void</span> CallExampleL();
<a name="l00035"></a>00035
<a name="l00036"></a>00036 LOCAL_C <span class="keywordtype">void</span> DoStartL()
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <span class="comment">// Create and install the active scheduler.</span>
<a name="l00039"></a>00039 CActiveScheduler* scheduler = <span class="keyword">new</span> (ELeave) CActiveScheduler();
<a name="l00040"></a>00040 CleanupStack::PushL(scheduler);
<a name="l00041"></a>00041 CActiveScheduler::Install(scheduler);
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="comment">// Create an object of the CLongNumber class.</span>
<a name="l00044"></a>00044 <a class="code" href="class_c_long_number.html">CLongNumber</a>* number = <a class="code" href="class_c_long_number.html#aa6cb04e2afa3b0948941ab4910739331">CLongNumber::NewL</a>(console);
<a name="l00045"></a>00045 CleanupStack::PushL(number);
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="comment">// Read the number from the user.</span>
<a name="l00048"></a>00048 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextEnterNumber,<span class="stringliteral">"Singly linked list example.\nEnter the digits of a number...\n"</span>);
<a name="l00049"></a>00049 console->Printf(KTextEnterNumber);
<a name="l00050"></a>00050 <span class="comment">// Generate an asynchronous read request.</span>
<a name="l00051"></a>00051 number-><a class="code" href="class_c_long_number.html#a1b5d110a5df39ccfeda083160370dc5c">ReadNumber</a>();
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">// Start the active scheduler.</span>
<a name="l00054"></a>00054 CActiveScheduler::Start();
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// Create an object of the CAdder class.</span>
<a name="l00057"></a>00057 <a class="code" href="class_c_adder.html">CAdder</a>* adder = <a class="code" href="class_c_adder.html#aa703f5386236c2fa9ad3b750f521200a">CAdder::NewL</a>(number);
<a name="l00058"></a>00058 <span class="comment">// Add all the digits of the number and print the sum.</span>
<a name="l00059"></a>00059 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextSum,<span class="stringliteral">"Sum of all digits of the number : %d\n"</span>);
<a name="l00060"></a>00060 console->Printf(KTextSum,adder-><a class="code" href="class_c_adder.html#a1a7d0002967f1aa090a6beb84a433d4c">Add</a>());
<a name="l00061"></a>00061 <span class="keyword">delete</span> adder;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// Destroy the objects in the cleanup stack.</span>
<a name="l00064"></a>00064 CleanupStack::PopAndDestroy(2,scheduler); <span class="comment">// number, scheduler.</span>
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a>00067 GLDEF_C TInt E32Main() <span class="comment">// main function called by E32</span>
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 __UHEAP_MARK;
<a name="l00070"></a>00070 CTrapCleanup* cleanup=CTrapCleanup::New(); <span class="comment">// get clean-up stack</span>
<a name="l00071"></a>00071 TRAPD(error, CallExampleL()); <span class="comment">// more initialization, then do example</span>
<a name="l00072"></a>00072 <span class="keyword">delete</span> cleanup; <span class="comment">// destroy clean-up stack</span>
<a name="l00073"></a>00073 __ASSERT_ALWAYS(!error, User::Panic(KTxtEPOC32EX, error));
<a name="l00074"></a>00074 __UHEAP_MARKEND;
<a name="l00075"></a>00075 <span class="keywordflow">return</span> 0; <span class="comment">// and return</span>
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 LOCAL_C <span class="keywordtype">void</span> CallExampleL() <span class="comment">// initialize and call example code under cleanup stack</span>
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 console=Console::NewL(KTxtExampleCode, TSize(KConsFullScreen, KConsFullScreen));
<a name="l00081"></a>00081 CleanupStack::PushL(console);
<a name="l00082"></a>00082 TRAPD(error, DoStartL()); <span class="comment">// perform example function</span>
<a name="l00083"></a>00083 <span class="keywordflow">if</span> (error)
<a name="l00084"></a>00084 console->Printf(KFormatFailed, error);
<a name="l00085"></a>00085 <span class="keywordflow">else</span>
<a name="l00086"></a>00086 console->Printf(KTxtOK);
<a name="l00087"></a>00087 console->Printf(KTextPressAnyKey);
<a name="l00088"></a>00088 console->Getch(); <span class="comment">// get and ignore character</span>
<a name="l00089"></a>00089 CleanupStack::PopAndDestroy(); <span class="comment">// close console</span>
<a name="l00090"></a>00090 }
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