CodeBlocks: Old CodeBlocks IDE to set C++ ISO standard: C++ 2011 / C++ 2014 / C++ 2017 / C++ 2020

You can use old CodeBlocks because CodeBlocks is just an IDE code editor and you can change to the new C++ compiler mingw version.

Do the following steps.

Open CodeBlocks

Menu > Settings > Compiler

Selected compiler: GNU GCC Compiler

Tab on "Compiler settings"

Tab on "Other compiler options"

Type: -std=c++11    or    -std=c++14   or    -std=c++17    or    -std=c++2a

Click the button OK