Add some codes and get the results as follows: Initialize Hello, World! Clear up NOTES: Don't modify the MAIN function any way!

Filename	Size	Update
CPP实验三.xcodeproj	0	2018-03-08
CPP实验三.xcodeproj\project.pbxproj	7914	2018-03-08
CPP实验三.xcodeproj\project.xcworkspace	0	2018-03-08
CPP实验三.xcodeproj\project.xcworkspace\contents.xcworkspacedata	172	2018-03-08
CPP实验三.xcodeproj\project.xcworkspace\xcuserdata	0	2018-03-08
CPP实验三.xcodeproj\project.xcworkspace\xcuserdata\Jeffson_Bit.xcuserdatad	0	2018-03-08
CPP实验三.xcodeproj\project.xcworkspace\xcuserdata\Jeffson_Bit.xcuserdatad\UserInterfaceState.xcuserstate	11250	2018-03-08
CPP实验三.xcodeproj\xcuserdata	0	2018-03-08
CPP实验三.xcodeproj\xcuserdata\Jeffson_Bit.xcuserdatad	0	2018-03-08
CPP实验三.xcodeproj\xcuserdata\Jeffson_Bit.xcuserdatad\xcschemes	0	2018-03-08
CPP实验三.xcodeproj\xcuserdata\Jeffson_Bit.xcuserdatad\xcschemes\CPP实验三.xcscheme	3527	2018-03-08
CPP实验三.xcodeproj\xcuserdata\Jeffson_Bit.xcuserdatad\xcschemes\xcschememanagement.plist	484	2018-03-08

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