自定义string类\自定义string类\string.cpp ..............\..............\string.h ..............\..............\自定义string类.vcxproj ..............\..............\自定义string类.vcxproj.filters ..............\..............\自定义string类.vcxproj.user ..............\自定义string类.sln ..............\自定义string类.suo ..............\自定义string类 自定义string类