0_0_13149002_17173.cpp 0_0_13149002_17173.cpp(6) : error C3861: “scanf”: 找不到标识符 0_0_13149002_17173.cpp(8) : error C3861: “scanf”: 找不到标识符 0_0_13149002_17173.cpp(12) : error C3861: “printf”: 找不到标识符