0_0_18672344_18515.cpp 0_0_18672344_18515.cpp(17) : error C2065: “i”: 未声明的标识符 0_0_18672344_18515.cpp(19) : error C2065: “i”: 未声明的标识符 0_0_18672344_18515.cpp(20) : error C2065: “i”: 未声明的标识符 0_0_18672344_18515.cpp(22) : error C2065: “i”: 未声明的标识符