Hello @Zain!
You will probably need to get familiar with git to take part in this challenge. As a programmer, no matter which type, learning about version control is a stellar time investment! Github has some good resources to get started: https://try.github.io/
Another option is to make a team, so you could focus on your area of expertise. Post in this thread to introduce yourself and find teammates: Looking for team member?
Finally, yes you can absolutely use C++ to write your solution. The winner from last year used C++: https://flatland.aicrowd.com/research/top-challenge-solutions.html