undefined reference to `Game::Game()'

Hello! I am new with C++ and I am trying to learn how to make a console RPG game!

I just finished watching tutorial one and I get this error when I try to run the game:

main.cpp:(.text+0x31): undefined reference to `Game::Game()'
main.cpp:(.text+0x59): undefined reference to `Game::MainMenu()'
main.cpp:(.text+0x6c): undefined reference to `Game::~Game()'
main.cpp:(.text+0x8e): undefined reference to `Game::~Game()'

Does anyone know how to fix this?

I have tried to git clone your repo (the final game) and run it but still get the same error with:

main.cpp:(.text+0x3d): undefined reference to `Game::initGame()'

[Error-Cookie]

Got that error too. Just change the #include "Game.h" to #include "Game.cpp" in the main.cpp file. I don't know why it worked for him but in main.cpp and in Game.cpp he includes Game.h. Game.cpp is never included so it is no wonder that it doesn't find the Classes and the Functions.