Unable to view C++ files

Hi All,

I have Gitlab installed and running on a CentOS 7 virtual machine. I am using gitlab for my school projects. I am currently working on a project working in C++. When i take a look in my repository I cant view the C++ files, I can only download them. My question is, what do I need to configure/do to view the C++ files in my repository?

Thanks,
Zandschuur