GNU/Linux Ubuntu 20.04 Installing GCC 11.2 from Source – Step by step Guide
How to Install GNU Compiler Collection 11.2.x from Source on Ubuntu 20.04 Focal LTS GNU/Linux – Step by step Tutorial.
And the GCC 11.2 for Ubuntu 20.04 is a Compilers Collection currently supporting C, C++, Objective-C, Objective-C++, Fortran, Ada, D, Go, and BRIG (HSAIL) Languages.
Finally, GCC 11.2 includes several New Features, Changes, and Fixes that you can consult on the GNU GCC Documentation.
 
- 1. Launching Terminal- Open a Shell Session 
 (Press “Enter” to Execute Commands)And Update Ubuntu Apt Repository:  - sudo apt update 
- 2. Querying System GCC- First, find out what the actual System GCC 
 Play:- which gcc Take Note of the PATH to use after installation for switching the System GCC.
 Possibly to Check the current GCC version issue:- gcc -v 
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