1-18、讯为系统编程readdir

#include <stdio.h>
//opendir,closedir,readdir函数头文件
#include <dirent.h>
#include <sys/types.h>

int main(int argc,char *argv[])
{
	int ret;
	DIR *dir;
	struct dirent *catlog;
//检测参数	
	if(argc <2){
		printf("\nPlease input file path\n");
		return 1;
	}
//使用opendir函数打开目录
	dir = opendir(argv[1]);
	if(dir==NULL){
		printf("opendir %s failed!\n",argv[1]);
		return 1;
	}
	printf("opendir %s suceces！\n",argv[1]);
//使用readdir读取目录argv[1]
	catlog = readdir(dir);
	if(catlog == NULL){
		printf("readdir %s failed!\n",argv[1]);
		return 1;
	}
	printf("%s d_ino is %ld\n ",argv[1],catlog->d_ino);
//使用closedir函数关闭目录
	closedir(dir);
	
	return 0;
}