0_0_23050273_12307.cpp 0_0_23050273_12307.cpp(19) : error C2065: “i”: 未声明的标识符 0_0_23050273_12307.cpp(20) : error C2065: “i”: 未声明的标识符 0_0_23050273_12307.cpp(22) : error C2065: “i”: 未声明的标识符