0_0_29678728_6814.cpp 0_0_29678728_6814.cpp(12) : error C2065: “i”: 未声明的标识符 0_0_29678728_6814.cpp(13) : error C2065: “i”: 未声明的标识符 0_0_29678728_6814.cpp(14) : error C2065: “i”: 未声明的标识符