0_0_14023025_23158.c 0_0_14023025_23158.c(1) : error C2061: 语法错误: 标识符“namespace” 0_0_14023025_23158.c(1) : error C2059: 语法错误:“;” 0_0_14023025_23158.c(5) : error C2065: “EOF”: 未声明的标识符