my-dir-ls

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

int fun();

int main(int argc, char *argv[])
{
	int num;
	num = fun();
	printf("total:%d\n", num);

	return 0;
}


int fun(void)
{
	DIR *dp;
	int n, flag = 0; //flag = 1 有目录　０没有目录
	static int count = 0;
	char dir_path_buf[1024];
	struct dirent *rdp;
	struct stat dbuf;
	dp = opendir(".");
	if(dp == NULL){
		perror("opendir error");
		exit(1);
	}

	while( (rdp = readdir(dp)) != NULL){
		if(strcmp(rdp->d_name, ".") == 0 || strcmp(rdp->d_name, "..") == 0){
			continue;	
		}	
		n = stat(rdp->d_name, &dbuf);
		if(n == -1){
			perror("stat error:\n");
			exit(1);
		}
		if(dbuf.st_mode & S_IFDIR){
			printf("dir:%s\n", rdp->d_name);
			sprintf(dir_path_buf, "./%s", rdp->d_name);
//			printf("%s\n", dir_path_buf);
			chdir(dir_path_buf);
			flag = 1;
//			printf("dir:%s", rdp->d_name);
			fun();
			if(flag == 1 ){
				chdir("..");
			}
			
		}else{
			printf("%s\n", rdp->d_name);
			count++;
		}
	}
//	printf("t:%d\n", count);
	return count;
}