C can’t compile – symbol(s) not found for architecture x86_64

You can compile, but you cannot link. part1.o is using the functions you defined in your last .h file and the implementations cannot be found. When you link your program, you need to make sure you’re linking in the object file(s) (or libraries) that contain the implementations of those functions. You’ve likely done something like: gcc part1.c -o myapp and … Read more