design and develop modular programme in c for providing autonomous vehicle with real time onwards and return journey driving

Question

using data structures

Answer 1

A team of coders could do that for 💲

Answer 2

I agree with another answer that it requires pretty significant resources to make self-driving software. I created fairly simple self-driving software applied to toy-sized cars for a university-level competition called the International Autonomous Robot Racing Challenge. Even that was difficult.
If you wanted a software testing tool for your project, I created one at https://github.com/joshi1983/IARRCSim. Let me know if you or anyone else reading this is interested because that can convince me to be more active with improving the tool.