Ok so I try to do it this program by myself and I can't do it mysfelf. Im a new to this programming stuff. So I came here to ask help. Hope you can help me. My prof gave me program that will convert any base to bae 10. "Conversion from any Base to Base 10" it should be with char array. So how to do this?

You've posted your question in the Hardware and Software forum category. What programming language are you working with so that this thread can be moved to a better category.