You now have to add your file to the project. A dialogue box will appear which allows you to select one or more files. Double click on the name of the source file, e.g. hello.c , which will cause the filename to be moved to the lower part, meaning that it is going to be added. This will add the file to the project. The initial compilation of each project takes a long time.
Subsequent compilations are faster.
If there are errors, they will appear in an error window. Double clicking on a compiler error brings you to the place of the error in the source. If there are any link errors, you will have to find the source of the error yourself. After you have repaired the errors, you will have to re-execute the previous step. Otherwise, your program runs.