revert to old version and fixed #267
revert to old version and fixed #267

jwave/CppPrimer,at86/CppPrimer,shuidong/CppPrimer,laohei889/CppPrimer,Milk-SF/CppPrimer,cseryp/CppPrimer,cseryp/CppPrimer,vzyw/CppPrimer,m0000re/CppPrimer,akanezorap/CppPrimer,jwave/CppPrimer,floristt/CppPrimer,heamon7/CppPrimer,laohei889/CppPrimer,lawlietye/CppPrimer,zhangzhizhongz3/CppPrimer,Sublele/CppPrimer,akanezorap/CppPrimer,pezy/CppPrimer,m0000re/CppPrimer,cheng668/CppPrimer,zhangzhizhongz3/CppPrimer,FingerSport/CppPrimer,FingerSport/CppPrimer,shuidong/CppPrimer,Sublele/CppPrimer,heamon7/CppPrimer,cheng668/CppPrimer,wgs111/CppPrimer,pezy/CppPrimer,vzyw/CppPrimer,sheldon66/CppPrimer,sheldon66/CppPrimer,lawlietye/CppPrimer,Milk-SF/CppPrimer,wgs111/CppPrimer,floristt/CppPrimer,at86/CppPrimer