0_0_21508099_25924.c 0_0_21508099_25924.c(7) : error C2061: 语法错误: 标识符“can” 0_0_21508099_25924.c(7) : error C2059: 语法错误:“;” 0_0_21508099_25924.c(7) : error C2059: 语法错误:“类型”