Please help me set up sdl2 on mac

i don’t know why i can not open image on xcode. every time i run this have pop up. sorry for my bad engish but please help me

The error message is pretty clear: you don’t have an actual executable binary in your app bundle.

Looking at the screenshot, it doesn’t look like you’ve given your source code files an extension. You need to give them the correct extension for the language you’re using (.c for C, .cpp, .cc, or .cxx for C++, etc.) or else Xcode won’t know what to do with them.