As you have been coding in your classes as well as when you get your first software engineering job, you will realize there will be multiple people contributing their code to a central code base. To link people to their code as well as link them to a time frame of when they committed their code, something like version control is used. Version control is mainly something used to manage and track changes to code. This is very helpful because you can see who did what, identify which code introduced new bugs, see past implementations to a specific files, and link stories to specific parts of the code base. I like version control because it just makes everyone’s contributions cleaner. Merge conflicts can be prevented or at least resolved with version control. You will not have to guess who put a random piece of code in a place you are working on. Version control will tell you. 

You will have to get comfortable with platforms that use version control like Github, Gitlab, and Bitbucket. Different companies use different things. You will also have to get comfortable using git commands. This is how you will be integrating your code with the central code base and integrating the central code base with your local version. It does take a bit of time to get used to, but it is better than using nothing. Just before your first job, familiarize yourself with git commands, so when you start contributing to a production level application, the learning curve will not be as bad for you.