c 获取第一个文件 移动

#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#define MAX 1024
int get_file_count(char *root,char* buffer,size_t buflen)
{
DIR *dir;
struct dirent * ptr;
int total = 0;
char path[MAX];
dir = opendir(root); /* 打开目bai录*/
if(dir == NULL)
{
perror("fail to open dir");
exit(1);
}
errno = 0;
while((ptr = readdir(dir)) != NULL)
{
//顺序读取每一个目录项；
//跳过du“..”和“.”两zhi个目录
if(strcmp(ptr->d_name,".") == 0 || strcmp(ptr->d_name,"..") == 0)
{
continue;
}
//printf("%s%s/n",root,ptr->d_name);
//如果是目录，则递归dao调用 get_file_count函数
memset(buffer,'\0',buflen);
if(ptr->d_type == DT_REG)
{
//printf("%s%s/n",root,ptr->d_name);
strcpy(buffer,ptr->d_name);
break;
}
}
if(errno != 0)
{
printf("fail to read dir"); //失败则输出提示信息
exit(1);
}
closedir(dir);
return 0;
}
int main(int argc, char * argv[])
{
char filename[40];
if(argc != 2)
{
printf("wrong usage/n");
exit(1);
}
int i = 0;
for(i =0 ; i< 5000;i++)
{
get_file_count(argv[1],filename,40);
//printf("%s ",filename);
char oldname[200];
char newname[200];
sprintf(oldname,"testdir/%s",filename);
sprintf(newname,"movedir/%s",filename);
rename(oldname,newname);
}
return 0;
}