段错误!!!

mrlgongshe

我写了个程序摹拟终端的ls命令:
[code:1]

#include <stdio.h>
#include <dirent.h>
main(int argc,char **argv)
{
  DIR *dp;
  struct dirent *link;
  dp = opendir(argv[1]);
  while((link=readdir(dp))!=0)
     printf("%s\n",link->d_name);
  close(dp);
}

[/code:1]
编译通过,但执行a.out时"段错误"!!!
不知何故,多谢指教!

mozilla

./a.out dirname

wsm

是啊 你没有判断输入

mrlgongshe

不对啊,我明明加了目录名的.  

wulfgang

the dir you provided doesn't exist

EdwardRF

use argv[0], not argv[1],
argv[1] is the second parameter