Lab46 Wiki

If you are getting unexplainable build errors on your own system when you run 'make default' after already running 'make clean', it can be one of two things.

Firstly, it can be because your using the wrong version of gcc, the sll3 project files can only compile with version 9 of gcc. You can use the same version of gcc as lab46 by using the following commands (assuming you are using a Raspberry Pi with it's default OS) in this link: https://gist.github.com/sol-prog/95e4e7e3674ac819179acf33172de8a9

If that does not fix the problem then you need to edit one of the Makefiles in the sll3 project directory. The offending Makefile is in the /src/list/ directory. Run the following command to edit that file:

USER@SYSTEM:$ nano ~/src/SEMESTER/DESIG/sll3/src/list/Makefile

remove the following line of code (after the line that says lib:)

@date +'%Y%m%d%H%M%S' >> /var/public/$(SEMESTER)/$(DESIG)/$(PROJ)/.updates/.metrics/${USER}

Then try building the project again.

This week we will be editing five of our functions to implement functionality with the two new properties with the 'list' struct in the 'list.h' file. These two new properties are

• qty: an 'unsigned long int' with the amount of nodes in the 'list'
• list: a pointer of type 'list' that points to another 'list'

We have 5 modification tasks to do for full credit. These are:

• mk(): Implement the new functionality of 'qty' and the next 'list'
• cp(): Make sure to copy the new properties of the struct 'list'
• insert(): Add new functionality related to 'qty'
• append(): Same as insert
• obtain(): Opposite of insert() & append()

*Our task is to ask questions on Discord or in class and document our findings on this wiki page collaboratively, regarding the functionality of this project.

*For anybody interested in editing the wiki page, here is the dokuwiki user guide: https://www.dokuwiki.org/wiki:syntax#basic_text_formatting -Ash

Inside list.h, the included header file given to you when you upgraded, and that you've had for the past few iterations of this project, was updated with additional variables. Two new variables were added to the list struct. Those are qty and next. Next is a pointer to the next list, we are now dealing with groups of linked lists. Qty contains the amount of nodes in the list. Other than that, nothing has changed inside the list.h file given to you. This project should take minimal time, don't be surprised if it seems too easy, that's why sll3 and sll4 are due both the week after break week. More detailed information about the types of qty and the next pointer are specified above in the specifications section.

Nothing has changed in terms of output from your original five functions. Only add functionality of the new variables to the previously made functions.

Unit Tests are again located inside bin/ after you compile. To compile, from the base sll3 directory, make clean(should be done every time but first time is not necessary) then make. Unit Tests will have more tests in each than previous, these tests are for your next and qty variables.