Hello
Here is a sourc code I have found for your games.
Caribbage: http://www.devboxforums.com/showthread.php?t=846
Junior Scrabble: http://www.cpp-home.com/forum/viewtopic.php?p=114513
I searched for about 10 minutes and found these two source code for you. I hope if you invest 20-30 minutes you will find the solution for all the games.
Good Luck!