Upgrade C++ compiler version

[rohitpaulk]

(Using C++)

I tried to use std::format but it looks like you have an older compiler on here.

Thanks to @shawlynot for reporting this!

[rohitpaulk]

The std::format function was introduced in the C++20 standard[3]. However, the actual support for this feature in compilers came later. The GCC compiler started supporting std::format from version 13, which was released in April 2023[1][4]. For the Clang compiler, std::format support was added in version 14, but it was marked as an incomplete feature. Full support was available from Clang 15.0.0 and later, which could be enabled with the -fexperimental-library compiler flag[1]. For MSVC, support for std::format was available from version 16.10 and upward[1].

Citations:
[1] https://stackoverflow.com/questions/63724059/does-gcc-support-c20-stdformat
[2] https://en.wikipedia.org/wiki/C%2B%2B
[3] https://en.wikipedia.org/wiki/C%2B%2B20
[4] https://developers.redhat.com/articles/2023/06/21/new-c-features-gcc-13
[5] https://gcc.gnu.org/projects/cxx-status.html
[6] https://en.cppreference.com/w/cpp/compiler_support
[7] https://gcc.gnu.org/gcc-13/changes.html
[8] https://en.cppreference.com/w/cpp/language/history

[rohitpaulk]

We're running gcc 12.x - so I'm guessing updating to 13.x should fix it?

[rohitpaulk]

Let's update gcc across all challenges while we're at it

[shawlynot]

We're running gcc 12.x - so I'm guessing updating to 13.x should fix it?

That fixed it for me. Also, I'm not sure what you guys use for your back end, but I needed to either upgrade my WSL Ubuntu 22 or use the bundled libstdc++ in gcc 13 (I went with the latter and I don't actually know what I'm doing).