0_0_32920558_18345.cpp 0_0_32920558_18345.cpp(6) : error C2065: “cin”: 未声明的标识符 0_0_32920558_18345.cpp(8) : error C2065: “cin”: 未声明的标识符 0_0_32920558_18345.cpp(9) : error C3861: “memset”: 找不到标识符