Hello everyone, as you may notice by the question I am quite new to the whole world of programming. I've been using Xcode to create executable files to rewrite and run some of the exercises that my teacher gives us. The question is the following: is it possible to create a single executable file? Because now i can only create a file inside a project and when I try to write an exercise with the tag "int main(void)..." it gives me an error and a friend said that it is because it is already used in the "main " file inside the project. So can I have a single file to run and create lots of them with the tag "int main (void)" and run them?