0_0_30127449_11393.cpp 0_0_30127449_11393.cpp(11) : error C3861: “scanf”: 找不到标识符 0_0_30127449_11393.cpp(14) : error C3861: “scanf”: 找不到标识符 0_0_30127449_11393.cpp(15) : error C3861: “printf”: 找不到标识符