网络传输文本，urlEncode和decode的实现。

======================================================================== CONSOLE APPLICATION : urlencode Project Overview ======================================================================== AppWizard has created this urlencode application for you. This file contains a summary of what you will find in each of the files that make up your urlencode application. urlencode.vcproj This is the main project file for VC++ projects generated using an Application Wizard. It contains information about the version of Visual C++ that generated the file, and information about the platforms, configurations, and project features selected with the Application Wizard. urlencode.cpp This is the main application source file. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named urlencode.pch and a precompiled types file named StdAfx.obj. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" comments to indicate parts of the source code you should add to or customize. /////////////////////////////////////////////////////////////////////////////