Xcode升级11，'iostream' file not found问题
今天升级Xcode11之后报错'iostream' file not found
解决方法1：
Build Settings -> Search paths ->System Header Search Paths
在Debug和Release添加
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/
解决✅
原文 https://stackoverflow.com/questions/58227419/iostream-file-not-found-xcode