0_0_19215793_31329.cpp 0_0_19215793_31329.cpp(6) : error C2065: “EOF”: 未声明的标识符 0_0_19215793_31329.cpp(6) : error C3861: “scanf”: 找不到标识符 0_0_19215793_31329.cpp(6) : fatal error C1903: 无法从以前的错误中恢复;正在停止编译