963561_0_0_16744.cpp 963561_0_0_16744.cpp(5) : error C2065: “cin” : 未声明的标识符 963561_0_0_16744.cpp(6) : error C3861: “cin”: 即使使用参数相关的查找,也未找到标识符 963561_0_0_16744.cpp(7) : error C2065: “cout” : 未声明的标识符