0_0_29678613_25779.cpp 0_0_29678613_25779.cpp(17) : error C2065: “i”: 未声明的标识符 0_0_29678613_25779.cpp(18) : error C2065: “i”: 未声明的标识符 0_0_29678613_25779.cpp(19) : error C2065: “i”: 未声明的标识符