To create folder build

PS> cmake -B build/ -S . -G "MinGW Makefiles"

To compile

PS> cmake --build build/

To create hidden folder git

PS> git init

To show git the files in which we want to see changes we need to create file .gitignore and whire there:

PS> *.swp
PS> build

And to add this new file to git

PS> git add .

To see the changes

PS> git status

To commit the changes

PS> git commit -m 'initial commit'

To see all commits

PS> git log

To push

PS> git push -u origin master 

If we change file CMakeLists.txt we need to whire

PS> git add CMakeLists.txt
PS> git commit -m 'cmake minimum version lower'
PS> git push

Github Action

Create a folder .github, there create a folder workflows, then create a file test.yaml

Instead of write evety time ...

cd build/
cmake ..
cmake --build .
./main 45

... we can customize cmake in github action

Unit tests

We can use googletest or Boost.Test

First we need to install googletest

PS> git clone https://github.com/google/googletest.git -b v1.15.2
PS> cd googletest/
PS> mkdir build/
PS> cmake -G "MinGW Makefiles" --install-prefix "C:\Program Files (x86)\googletest-distribution" ..
PS> cd..
PS> cmake --install build --prefix '/c/Program Files (x86)/googletest-distribution'

For my computer I need to add next lines in all CmakeLists.txt

set( CMAKE_CXX_COMPILER "/msys64/ucrt64/bin/g++.exe" )
set( CMAKE_C_COMPILER "/msys64/ucrt64/bin/gcc.exe" )

Then we need to write tests

First, create a file "test_add.cpp" and add in test.yaml - run: ./build/tests