为Eclipse添加C/C++开发工具

　　1. Eclipse CDT (C/C++ Development Tooling) eclipse CDT 是 Eclipse 插件，它将把 Eclipse 转换为功能强大的 C/C++ IDE。

　　   到http://www.eclipse.org/cdt/downloads.php下载对应版本的CDT

　　2. Eclipse-> Help->Install New Software->Add

　　Name 填写 CDT ， Location填写下载的CDT位置

　　勾选CDT Main Features    CDT Optional Features

　　Contact all update sites during install to find required software的√去掉

　　3.  ->Next->Finish

　　注意：An error occurred while collecting items to be installed    

　　安装的时候把Contact all update sites during install to find required software的√去掉即可