How to update or install g++ 15 in Ubuntu 20.04?

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1 Answer

There is no g++15. Ubuntu 20.04 comes with gcc-9 by default (and gcc-10 can be installed with sudo apt install gcc-10). g++ is a part of GCC.

According to Wikipedia,

GCC has had complete support for C++17 language features since version 8

Therefore, gcc-9 certainly supports C++14. There is no C++15.

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