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0_0_27406307_27335.cpp
0_0_27406307_27335.cpp(20) : error C2065: “sum1”: 未声明的标识符
0_0_27406307_27335.cpp(20) : error C2070: “unknown-type”:  非法的 sizeof 操作数
0_0_27406307_27335.cpp(29) : error C2065: “sum1”: 未声明的标识符
0_0_27406307_27335.cpp(34) : error C2065: “num2”: 未声明的标识符
0_0_27406307_27335.cpp(35) : error C2065: “num2”: 未声明的标识符
0_0_27406307_27335.cpp(45) : error C2065: “sum1”: 未声明的标识符
0_0_27406307_27335.cpp(50) : error C2065: “sum1”: 未声明的标识符
0_0_27406307_27335.cpp(61) : error C2065: “num2”: 未声明的标识符