0_0_38874111_1205.cpp 0_0_38874111_1205.cpp(6) : error C3861: “scanf”: 找不到标识符 0_0_38874111_1205.cpp(10) : error C3861: “scanf”: 找不到标识符 0_0_38874111_1205.cpp(13) : error C3861: “scanf”: 找不到标识符 0_0_38874111_1205.cpp(21) : error C3861: “printf”: 找不到标识符