You will not install Dev-C++ in Linux. Even if you were using Windows it would not be recommended to install Dev-C++. Both the legacy (Bloodshed) and improved (Orwell) versions have been abandoned, so you'd be installing Visual Studio Community Edition.
In Linux you will install a compiler (GCC, G++) and independently of it, a programmer's text editor or IDE.
Before you rush to get an IDE's bear in mind that a humble text editor + compiler combo can work very well and keep things simple, especially if you're only doing C++ for homework.
Even if you were using Windows it would not be recommended to install Dev-C++. Both the legacy (Bloodshed) and improved (Orwell) versions have been abandoned, so you'd be installing Visual Studio Community Edition.
(Not relevant for non-Windows platform.) However, the Orwell devc++ IDE can be used with other compilers such as the C++11 compiler from Embarcardero, or Mingw 7.2 https://nuwen.net/mingw.html
There are most likely packages available already, but note that many distributions only provide packages for a particular major compiler version, which is often out-dated (or at least not bleeding-edge).
If you're a beginner, the version provided by the package system is probably fine for now. But if you want a newer version, you will likely need to compile it yourself.