# [racket] Newbie question

>* As it says in the problem formulation, "check-guess3 consumes three digits and a number.[...] The number is called 'target'[...]", and from what I can figure out, 'guess' is a number made up of the three digits that have to be inputed. So I believe 'target' is the random name that the computer will choose (like in exercise 5.1.2.) and to which 'guess' should be compared against.
*>*
*>* And that's where I'm stuck. How can I "build" a number based on three inputed digits?
*
Start smaller and simpler.
Write the function three-digits->number : number number number -> number
The following are examples of how it should work:
(three-digits->number 1 2 3) gives 123
(three-digits->number 5 1 4) gives 514
If inputs are named a, b and c then
(three-digits->number a b c) gives the number,
that has a as first digit, b as second digit and
c the last (and thus least signigicant) digit.
--
Jens Axel Søgaard