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View Compilation Error

0_0_28787487_2720.cpp
0_0_28787487_2720.cpp(6) : error C2065: “cin”: 未声明的标识符
0_0_28787487_2720.cpp(9) : error C2065: “cin”: 未声明的标识符
0_0_28787487_2720.cpp(13) : error C2065: “cout”: 未声明的标识符
0_0_28787487_2720.cpp(13) : error C2065: “endl”: 未声明的标识符


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