454670_0_0_25981.c 454670_0_0_25981.c(3) : error C2065: “m” : 未声明的标识符 454670_0_0_25981.c(4) : error C2065: “j” : 未声明的标识符 454670_0_0_25981.c(10) : error C2059: 语法错误 : “}”