How to enter root mode and install gcc on Ubuntu

To enter root mode in Ubuntu, you can use one of the following methods:

1. Elevate to root user.
2. I am fine

To install gcc, you can follow these steps:

1. Open the terminal.
2. Update the system and install the gcc compiler using sudo apt.

Once the installation is complete, you can use the gcc command in the terminal to compile C/C++ code.