http://*.com/questions/7905025/string-could-not-resolved-error-in-eclipse-for-c-eclipse-cant-resolve-stan/9182742#9182742

mingw的include的路径与过程

http://www.mingw.org/wiki/includepathhowto

图文不错

https://my.oschina.net/leejun2005/blog/412924

cfree5, 自带mingw

http://www.programarts.com/cfree_ch/download.htm