Program Compiling

I have to merge three codes into One can any body guide me how to do it

a code is what spies use
if they have lots they're codes

code is what programmers use
if they have lots
they have lots of code

it might help if you gave us a clue what these 3 pieces of code do
or even show us the code

No cookie-cutter way to merge code. Each merging needs to be done carefully and tested WITH the separate code. So post the code.
Just be clear that this is not homework, right? :wink: