Mini-Lab:
Creating Fish in an Aquarium

Modify the Aquarium program.^*

• Download the starting code files for the Aquarium Lab Series.
  • Main function
  • AquaFish class (header file and implementation file)
  • Aquarium class (header file and implementation file)
  • Display class (header file, text-based implementation file, and graphics implementation file)
  • RandGen class (from Marine Biology Case Study -- header file and implementation file)
  • Utility functions (header file and implementation file)
  • WaitNClear function (header file and implementation file)
  • GNU General Public License
  Compile and run the program. It doesn't do much yet, but you will be adding several features to it over the next few labs to make it more interesting. For now, it's just important to have something that compiles and runs.

• Edit main.cpp to modify the output statement to welcome users to the fish aquarium program. Test the modified program.

• Research the partial AquaFish interface to discover the simplest way to construct a fish. Edit the main function to construct three fish variables.

• Research the display interface (in its header file) to discover how to display a fish. Modify the main function to display the three fish you constructed. Using blank lines, separate this sequence of new statements, which together perform a single function, from the existing code around them. Add a single comment preceding them that describes the purpose of the sequence. Test your modified program.

• Research the partial AquaFish interface to discover how to make a fish move forward. Add statements to the main function to move your three fish one step forward. Then display the fish again. Again, use blank lines and comments to separate functional units of code from each other. Do this in the output as well, by adding a statement to print a newline after the initial display of your fish.
  Question: are the fish guaranteed to still be in the bounds of the aquarium after the move forward? Why or why not?

• Update the program documentation at the top of the file to reflect your modifications. Test your modified program. You should see the ID and location of each fish before and after the move.

Print and save your modifications.

^*The Aquarium series of labs is loosely based on the Advanced Placement Computer Science Marine Biology Simulation Case Study, available from the College Board.