Linux下获取文件大小（程序）

 1 #include <stdio.h>

 2 #include <stdlib.h>

 3 #include <string.h>

 4 #include <error.h>

 5 #include <sys/types.h>

 6 #include <sys/stat.h>

 7 #include <unistd.h>  8 

 9 /*

10 Linux终端输入提示符下输入命令：man 2 stat 11 

12 stat, fstat, lstat - get file status 13 

14 有点类似于exec函数族一样的，stat函数族。 15 

16 int stat(const char* path, struct stat* buf); 17 int fstat(int fd, struct stat* buf); 18 int lstat(const char* path, struct stat* buf); 19 

20 struct stat { 21  dev_t st_dev; // ID of device containing file 22  ino_t st_ino; // inode number 23  mode_t st_mode; // protection 24  nlink_t st_nlink; // number of hard links 25  uid_t st_uid; // user ID of owner 26  gid_t st_gid; // group ID of owner 27  dev_t st_rdev; // device ID (if special file) 28  off_t st_size; // total size, in bytes 29  blksize_t st_blksize; // blocksize for file system I/O 30  blkcnt_t st_blocks; // number of 512B blocks allocated 31  time_t st_atime; // time of last access 32  time_t st_mtime; // time of last modification 33  time_t st_ctime; // time of last status change 34 }; 35 */

36 

37 int main(int arc, char* const argv[]) 38 { 39     struct stat fileInfo; 40     if (stat("main.c", &fileInfo) == 0) 41         printf("The file size: %d byte!\n", fileInfo.st_size); 42 

43     return 0; 44 }

 

总结：发现这个程序去掉#include <unistd.h>，也可以在Windows下运行。

仔细一查，Winows也有sys/types.h和sys/stat.h文件，struct stat的定义也差不多。

额，有点惊喜，Windows也遵循POSIX标准哈！