Linux - Reinstalled Kubuntu

A few days ago, I wanted to install the new subversion client for Kubuntu because the old one didn't have the 'svn diff -c' option. I guess I shouldn't have because it depends on a newer cpp package, which the system depends on it. So after installing the new cpp package, my thesis wouldn't compile. I tried installing the old cpp but it kept using the new one. So last night I reinstalled Kubuntu. I updated all the packages and everything looks good. Hopefully, I will be able to work on my thesis tonight.