小编qfa*_*fab的帖子

有时,C中的数组初始化会延伸到多行,特别是如果数组是多维的.在Emacs中,自动缩进的结果如下所示:

int a[N][N] = {{0, 0, 6, 7, 0, 4, 0, 2, 0},
               {0, 5, 0, 6, 0, 0, 0, 0, 1},
               {2, 0, 0, 0, 0, 8, 0, 0, 4},
               {4, 0, 9, 5, 0, 7, 0, 0, 3},
               {0, 0, 0, 0, 0, 0, 0, 0, 0},
               {8, 0, 0, 2, 0, 1, 9, 0, 6},
               {6, 0, 0, 1, 0, 0, 0, 0, 7},
               {3, 0, 0, 0, 0, 5, 0, 6, 0},
               {0, 2, 0, 3, …

在Kernighan和Ritchie 的第二版"The C Programming Language"中,他们实现了UNIX命令的简化版本ls(第8.6节"示例 - 列表目录",第179页).为此,它们创建以下接口,该接口提供对存储在目录中的文件的名称和inode编号的系统无关的访问.

#define NAME_MAX 14   /* longest filename component; */
                              /* system dependent */

typedef struct {      /* portable director-entry */
    long ino;                 /* inode number */
    char name[NAME_MAX+1];    /* name + '\0' terminator */
} Dirent;

typedef struct {      /* minimal DIR: no buffering, etc. */
    int fd;                   /* file descriptor for directory */
    Dirent d;                 /* the directory entry */
} DIR;

DIR *opendir(char *dirname);
Dirent *readdir(DIR …