convert INT to words.....345 to three four five, 321 to three two one....etc

Hi I'm in a relatively beginner programming class and need to do a program that will convert any 3 digit number to the written wording of each number. For example, 123 to one two three, or 456 to four five six, or 432 to four three two....etc. We aren't into arrays yet, so is there a way to do this without making a string or char array?

Thanks,

Chris