add_subdirectory(01_fundamentals)
add_subdirectory(02_control_flow)
add_subdirectory(03_functions)
add_subdirectory(04_arrays_and_strings)
add_subdirectory(05_pointers_and_references)
add_subdirectory(06_oop_basics)
add_subdirectory(07_stl_containers)
add_subdirectory(08_stl_algorithms)
add_subdirectory(09_cpp11)
add_subdirectory(10_cpp14)
add_subdirectory(11_cpp17)
add_subdirectory(12_cpp20)
add_subdirectory(13_cpp23)
add_subdirectory(14_cpp26)