IOday3作业

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
char *get_file(mode_t m, char name[])
{
	char per[] = "rwx";
	for (int i = 0; i < 9; i++)
	{

		if (m & (0400 >> i))
		{

			// if (0 == i % 3)
			// 	putchar('r');
			// else if (1 == i % 3)
			// 	putchar('w');
			// else if (2 == i % 3)
			// 	putchar('x');
			name[i] = per[(i % 3)];
		}
		else
		{
			name[i] = '-';
		}
	}
	return name;
}

int main(int argc, const char *argv[])
{
	struct stat buf;
	char static name[10] = "";
	if (stat(argv[1], &buf) < 0)
	{
		perror("stat");
		return -1;
	}
	struct tm *info = localtime(&buf.st_mtime);
	get_file(buf.st_mode, name);
	printf("%s\n", name);
	printf("mode:%o\nlink:%ld\nuid:%d\ngid:%d\nsize:%ld\ntime:%ld\ntime:%d-%02d-%02d %02d:%02d:%02d\n",
		   buf.st_mode, buf.st_nlink, buf.st_uid, buf.st_gid, buf.st_size, buf.st_mtime,
		   info->tm_year + 1900, info->tm_mon + 1, info->tm_mday,
		   info->tm_hour, info->tm_min, info->tm_sec);

	return 0;
}