C/C++ 遍历linux目录下所有文件并已树的形式打印

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

using namespace std;
void List(const char *path, int level) {
	struct dirent* ent = NULL;
	DIR *pDir;
	pDir = opendir(path);
	if (pDir == NULL) {
		//被当作目录，但是执行opendir后发现又不是目录，比如软链接就会发生这样的情况。
		return;
	}
	while (NULL != (ent = readdir(pDir))) {
		if (ent->d_type == 8) {
			//file
			for (int i = 0; i < level; i++) {
				printf("-");
			}
			printf("%s\n", ent->d_name);
		} else {
			if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) {
				continue;
			}
			//directory
			std::string _path(path);
			std::string _dirName(ent->d_name);
			std::string fullDirPath = _path + "/" + _dirName;
			for (int i = 0; i < level; i++) {
				printf(" ");
			}
			printf("%s/\n", ent->d_name);
			List(fullDirPath.c_str(), level + 1);
		}
	}
}
int main(int argc, char *argv[]) {
	List("/home/yangchao", 0);
	return 0;
}