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View Compilation Error

0_0_31788753_451.cpp
0_0_31788753_451.cpp(16) : error C2065: “preo”: 未声明的标识符
0_0_31788753_451.cpp(16) : error C2070: “unknown-type”:  非法的 sizeof 操作数
0_0_31788753_451.cpp(20) : error C2065: “preo”: 未声明的标识符
0_0_31788753_451.cpp(21) : error C2065: “preo”: 未声明的标识符
0_0_31788753_451.cpp(30) : error C2065: “preo”: 未声明的标识符
0_0_31788753_451.cpp(35) : error C2065: “preo”: 未声明的标识符


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