Here's an interesting problem.
Suppose you wanted to write an application for a manufacturing process that
will, in all probability, run for the next 30 years. No direct control of
the process itself is entailed (i.e., you don't need the program to
operation valves or run motors), but you do need this program to compute
manufacturing parameters for each customer. I/O requirements are very
modest, mostly simple keyboard and display.
I'd use Ada 2005. Why, becuase Ada is the best answer for the problem, and
Ada 2005 is the new language Spec. By using Ada you decrease the odds of
bugs sneaking through testing.
For display, I hope you're talking about terminal based, if you're talking
GUI, that's a whole other can of worms!
Zane