How Not to Program in C++

84 Chapter 4

36

37 int magic; // The file's magic number

38

39 // Size of the header read

40 int read_size =

41 read(fd, &magic, sizeof(magic));

42

43 if (read_size != sizeof(magic)) {

44 close(fd);

45 continue;

46 }

47

48 if (magic == MAGIC) {

49 close(fd);

50 return (cur_ent->d_name);

51 }

52 close(fd);

53 }

54 }

55 /************************************************

56 * scan_dir -- Scan a directory for the files *

57 * we want. *

58 ************************************************/

59 char *scan_dir(

60 const char dir_name[] // Directory name to use

61){

62 // Directory to scan

63 DIR *dir_info = opendir(dir_name);

64 if (dir_info == NULL)

65 return (NULL);

66

67 chdir(dir_name);

68

69 // Name of the file we just found

70 char *name = next_file(dir_info);

71 closedir(dir_inf ...