Facebook code? what it use for? where is field to fill it?

Ưhen I clicked the link "Comfirm your account" , there is no field appeared for me to fill the stupid code.

Without that code, I can use fuckbook stably

Any idea?

just click the confirm your account button , and the problem is solved . dont make it looks like register new account for facebook is hard. if you click confirm your account button there is code to verify you facebook account, try click on confirm your account button and there will be new tab and your facebook is verify by email. If you want to put that code manually dont click confirm your account just go to your setting and then click account and try to change who can see your email , change to only you / everyone maybe facebook will asking to verify your email and you will see field appeared for you to fill the code. Usually I see field to put that code from facebook after I click sign up button, and I will go to home page facebook and there will be field to put code with #####.

thank you, problem solved
field code ##### just only comes to those who use cellphone for registration
I use computer and it doesn't show field code .