0_0_28978047_1364.cpp 0_0_28978047_1364.cpp(8) : error C2065: “cin”: 未声明的标识符 0_0_28978047_1364.cpp(17) : error C3861: “sort”: 找不到标识符 0_0_28978047_1364.cpp(18) : error C2065: “cout”: 未声明的标识符 0_0_28978047_1364.cpp(18) : error C2065: “endl”: 未声明的标识符