upload problem

Hi
this message present to me when i want to upload the code to arduino and the code not working

(avrdude: no programmer has been specified on the command line or the config file
Specify a programmer using the -c option and try again)

what is the wrong ?!

Please post the full error message (and all text before it).

Also please provide your settings (you can find it in the "Tools" menu):
-Board type
-Port
-Programmer

Congratulations, it's twins:-
upload