if you use arch by the way you can download this package from AUR ( yay -S helloworld )

compilation from source code:

step 1: you need installed gcc and git package ( Gnu Complier Collection )

$ sudo apt install gcc git - debian-based

$ sudo pacman -S gcc git - arch-based

step 2: download the project repository

$ git clone https://github.com/Nick-cpp/helloworld

step 3: compilation & installation

$ cd helloworld/

$ g++ -std=c++17 "helloworld.cpp" -o helloworld

$ sudo install -Dm755 helloworld "$pkgdir/usr/bin/helloworld"

step 4: program launch

$ helloworld