iOS 批量创建文件

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

   NSString *documentsDirectory = [paths objectAtIndex:0];

    NSString *path;

   for (int dc =1; dc <= 10; dc++) {

        path =[documentsDirectory stringByAppendingPathComponent:[NSStringstringWithFormat:@"%d_.txt",dc]];

        [@""writeToFile:path atomically:YESencoding:NSUTF8StringEncodingerror:nil];

    }