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！
