linux C 读取目录文件并统计文件数

转自：http://blog.csdn.net/hhbbhh/article/details/5192411

#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;

}