Linux系统统计目录下的文件总数

#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>

#define MAX 1024

int get_file_count(char *root)
{
DIR *dir;
struct dirent * ptr;
int total = 0;
char path[MAX];
dir = opendir(root); /* 打开目录*/
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“..”和“.”两个目录
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，则递归调用 get_file_count函数

if(ptr->d_type == DT_DIR)
{
sprintf(path,"%s%s/",root,ptr->d_name);
//printf("%s/n",path);
total += get_file_count(path);
}

if(ptr->d_type == DT_REG)
{
total++;
printf("%s%s/n",root,ptr->d_name);
}
}
if(errno != 0)
{
printf("fail to read dir"); //失败则输出提示信息
exit(1);
}
closedir(dir);
return total;
}

int main(int argc, char * argv[])
{
int total;
if(argc != 2)
{
printf("wrong usage/n");
exit(1);
}
total = get_file_count(argv[1]);
printf("%s ha %d files/n",argv[1],total);
return 0;