It where at one point where I quitted C++ programming because I had no clue about what any of the on-screen code where. After I've looked up some Swift tutorials, I got to know how it work now. Maybe not all of it but I got to know about how some of it work. (And don't post a script here and ask me how it works, I still need to learn some things) Now I'm trying to make a raycaster engine with SFML using Xcode. But as the title said. Im pretty much stuck. If this doesn't explain what is wrong then I don't know what else to do. This comes up when I build and run the testing code, it say's that it was successful but this where coming up anyway. Anyone with a Mac and can use Xcode can possibly tell what is wrong. Can help?