Make a program in C language, that solves an engineering problem, about cars, it can be something easy, like calculating

[answerhappygod]

Make a program in C language, that solves an engineering
problem, about cars, it can be something easy, like calculating how
much gasoline a car spends or I don't know, but I really need this
to impress my class. Thank you
The developed software must include the following programming
structures:
- Repetition structures
- User-created functions
- Fixes