0_0_13431090_12455.cpp 0_0_13431090_12455.cpp(18) : error C2065: “i”: 未声明的标识符 0_0_13431090_12455.cpp(35) : error C2065: “i”: 未声明的标识符 0_0_13431090_12455.cpp(36) : error C2065: “i”: 未声明的标识符