0_0_34853983_14906.cpp 0_0_34853983_14906.cpp(6) : error C3861: “scanf”: 找不到标识符 0_0_34853983_14906.cpp(13) : error C3861: “scanf”: 找不到标识符 0_0_34853983_14906.cpp(14) : error C3861: “printf”: 找不到标识符