0_0_38855871_26067.c 0_0_38855871_26067.c(5) : error C2198: “sum”: 用于调用的参数太少 0_0_38855871_26067.c(15) : error C2065: “m”: 未声明的标识符 0_0_38855871_26067.c(16) : error C2065: “m”: 未声明的标识符 0_0_38855871_26067.c(16) : error C2198: “sum”: 用于调用的参数太少