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I'm a university student and this is my first time coding anything. I was doing pretty good but now, for some reason, my xcode will only run the first .c file i made within the project, even if i have a different one selected. My screen is shown in this screenshot to make it make more sense. https://imgur.com/a/yjNi9QA The "Hello world" code is in the first "main.c" file on the left, but whenever i try to run q1d or q2a, it only runs Hello World, not the actual files. Please help!!!!