Hi friends, could any of you give a good idea for doing a college project with c language?

I had a desktop application for the administrator of a block of flats. It helped him compute the payment for each apartment, as well as the salary for himself and the janitor. At the end it also saved the list to post with the payments for each apartment.

OK so I did that using C#, but I don't see why it couldn't be done using C++ ... with C you can't use classes.

I did mine on a Mortgage Amortization program. It is really open to what you want to do. You could do a Parts inventory, book inventory, any type of inventory, etc with a database. If not that complicated something like a form of input and outputting some results to the user.