C++：批量读取一个文件夹下所有特定后缀名文件

#include 
#include 

using namespace std;


bool bathReadFileNamesInFolders(const string folderName, const string extension, vector &vec_filenames)
{
	if (!boost::filesystem::exists(folderName))
	{
		return 0;
	}
	else
	{
		boost::filesystem::directory_iterator end_iter;
		for (boost::filesystem::directory_iterator iter(folderName); iter != end_iter; ++iter)
		{
			if (boost::filesystem::is_regular_file(iter->status()))
			{
				string file_name = iter->path().string();
				boost::filesystem::path dir(file_name);

				if (!dir.extension().string().empty())
				{
					if (!file_name.substr(file_name.rfind('.')).compare(extension))
					{
						vec_filenames.push_back(file_name);
					}
				}
			}

		}
	}
	return 1;
}

int main()
{
	const string path_name = "D:/sunquan/las_data";
	string extension = ".las";
	vector vec_file_names;
	bathReadFileNamesInFolders(path_name, extension, vec_file_names);
	for (int i = 0; i < vec_file_names.size(); i++)
	{
		cout << vec_file_names[i] << endl;
	}
	system("pause");
}