0_0_34923524_1150.c 0_0_34923524_1150.c(4) : error C2065: “cin”: 未声明的标识符 0_0_34923524_1150.c(8) : error C2065: “cin”: 未声明的标识符 0_0_34923524_1150.c(20) : error C2065: “cout”: 未声明的标识符 0_0_34923524_1150.c(20) : error C2065: “endl”: 未声明的标识符