0_0_16391539_13281.cpp 0_0_16391539_13281.cpp(25) : error C2065: “i”: 未声明的标识符 0_0_16391539_13281.cpp(30) : error C2065: “i”: 未声明的标识符 0_0_16391539_13281.cpp(39) : error C2065: “i”: 未声明的标识符