查看gcc版本，然后在eclipse中添加两个变量
Windows-->Preferences-->C/C++ --> build --> Environment
CPLUS_INCLUDE_PATH: /usr/include/c++/4.8.4
C_INCLUDE_PATH: /usr/include
eclipse 开发C/C++自动补全
原文：http://ting2junshui.blog.51cto.com/975290/1765662
