gcc13-c++ from home:Simmphonie:gcc:13 project
Select Your Operating System
Add repository and install manually
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Simmphonie:gcc:13/15.5/home:Simmphonie:gcc:13.repo zypper refresh zypper install gcc13-c++