打开目录，读取目录 ，然后获得文件状态

#include<stdio.h>
#include<stdlib.h>
#include<sys/stat.h>
#include<sys/types.h>
#include<dirent.h>
#include<string.h>
#include<fcntl.h>
#include<time.h>
#include<unistd.h>


static int get_stat(const char *filename)
{
struct stat statbuf;


if(stat(filename,&statbuf)==-1)
{
printf("error1");
return (-1);
}
if(S_ISDIR(statbuf.st_mode))
return 1;
if(S_ISREG(statbuf.st_mode))
return 0;


}


int main(int argc, char **argv)
{
DIR *dir;
struct dirent *drip;
int stats;

if(argc!=2)
{
printf("error2");
exit(1);
}


if(((stats=get_stat(argv[1]))==0)||(stats==-1))
exit(1);


if((dir=opendir(argv[1]))==NULL)
{
printf("error3");
exit (1);
}

while((drip=readdir(dir))!=NULL)
{
char dirbuf[1024];
memset(dirbuf,0,sizeof(dirbuf));
strcpy(dirbuf,argv[1]);
strcat(dirbuf, "/");
strcat(dirbuf, drip->d_name);


if(get_stat(dirbuf)==-1)break;
}

closedir(dir);
exit(1);

}

#include<stdio.h>
#include<dirent.h>
#include<sys/types.h>
#include<unistd.h>
#include<sys/stat.h>
#include<string.h>


int main()
{
DIR *dir;
struct dirent *ptr;
struct stat buf;
char buff[1024];

const char *name="/home/zzd";


dir=opendir(name);

while((ptr=readdir(dir))!=NULL)
{

memset(buff,0,sizeof(buff));
strcpy(buff,name);
strcat(buff,"/");
strcat(buff,ptr->d_name);


if(stat(buff,&buf)==0) 
{ 
  if(S_ISDIR(buf.st_mode))
        continue;
       if(S_ISREG(buf.st_mode))
          printf("%s %d\n",buff,buf.st_size);
 
}
}
closedir(dir);
return 0;


}