I used terminal to install eclipse with jdk7, and now I want incorporate c/c++ development, so I installed a compiler (gcc 4.7) and and eclipse cdt plugin from the terminal:

sudo apt-get install eclipse-cdt

But when I restarted eclipse and tried to change the perspective, there was no c++ option I cannot even create a new c++ project. Someone suggested that I do "Install New Software" and choose the cdt from the hard drive. If this is what I should do, where does terminal install its files to?