In-class Examples List

CIS 130
Intro to Programming
Spring 2007

• This is merely a selection of files and examples, most of which were mentioned or used in the class (lectures and labs). It is not a comprehensive list, nor are all lectures and labs included. Formatting is generally minimal.

• Week 15 Lecture - appending to a file in C++, the C++ switch statement, and ways to pass C++ parameters: pass-by-value and pass-by-reference
  • "projected" notes from lecture
  • two_writes.cpp - a main that writes an integer to one file, and appends the same integer to another file
  • describe_grade.cpp , describe_grade.h , test_describe_grade.cpp , - printing a description for a char grade
  • describe_grade2.cpp , describe_grade2.h , test_describe_grade2.cpp - printing a description for a char grade using a switch statement
  • Week 15 Lecture Exercise - switch practice
  • looky.cpp , looky.h , test_looky.cpp : typical pass-by-value
  • UGLYlooky.cpp , UGLYlooky.h , test_UGLYlooky.cpp : demonstrating how changing parameter doesn't change argument with pass-by-value
  • swap.cpp , swap.h , test_swap.cpp : example using pass-by-reference
  
  
• Week 14 Lab - 2-d arrays in C++, and a largish C++ program that uses several array-related functions (and for-loops and file i/o)
  • "projected" notes from lab
  • fill_2_d.cpp - a main filling a 2-d array with characters and showing the result
  • update.cpp - a main allowing a user to open a file of his/her choice, change its contents, see the sum of the new contents, and write the new contents to another file (with the help of an array)
    • get_file_contents.cpp , get_file_contents.h
    • show_indexed_contents.cpp , show_indexed_contents.h
    • request_changes.cpp , request_changes.h
    • sum_contents2.cpp , sum_contents2.h
    • put_contents.cpp , put_contents.h
  
  
• Week 14 Lecture - C++ arrays, for-loops, and file input/output, oh my! (and a little string discussion)
  • "projected" notes from lecture
  • sum_contents.cpp , sum_contents.h , test_sum_contents.cpp
    - playing with summing the contents of numeric arrays
  • sum_contents2.cpp sum_contents2.h test_sum_contents2.cpp
    - playing with summing the contents of numeric arrays using a for loop
  • sum_contents2.cpp sum_contents2.h test_sum_contents2.cpp
    - playing with summing the contents of numeric arrays using a for loop
  • get_file_contents.cpp get_file_contents.h test_get_file_contents.cpp
    - example of reading from a file into an array
  • put_contents.cpp put_contents.h test_put_contents.cpp
    - example of writing contents of an array into a file
  
  
• Week 13 Lecture - writing complete C++ programs
  • "projected" notes from lecture
  • one way to compile the program consisting of test_ring_area.cpp, ring_area.cpp, and circ_area.cpp:
    

                  g++ -c circ_area.cpp
                  g++ -c ring_area.cpp
                  g++ -c test_ring_area.cpp
                  g++ -o test_ring_area test_ring_area.o circ_area.o ring_area.o
    

  • test_ring_area.cpp
  • circ_area.cpp , circ_area.h - named-constant version of circ_area
  • ring_area.cpp , ring_area.h
  • test_ring_area.cpp
  
  
• Week 12 Lab - practicing with C++ if statements, while loops, local variables, simple screen output (cout) and simple keyboard input (cin)
  • numberlist.cpp , numberlist.h
  
  
• Week 12 Lecture - adding C++ if statements, while loops, local variables, simple screen output (cout) and simple keyboard input (cin)
  • "projected" notes from lecture
  • my_own_and.cpp - quick example returning a bool and using C++'s && operator, built using ~st10/funct_play2 on cs-server
  • my_own_and.h - header file for function my_own_and built in lecture using ~st10/funct_play2 on cs-server
  • count_negs.cpp - example using while, if, cout, and cin, built using ~st10/funct_play2 on cs-server
  • count_negs.h - header file for function count_negs built in lecture using ~st10/funct_play2 on cs-server
  
  
• Week 11 Lab - practicing with C++ simple functions using the cs-server tools ~st10/funct_play2 and ~st10/expr_play
  • Week 11 Lab Exercise (in PDF)
  • rect_area.cpp - goofy function rect_area built in lab using ~st10/funct_play2 on cs-server (goofy because it has a named constant PI, which it doesn't need!)
  • rect_area.h - header file for function rect_area built in lab using ~st10/funct_play2 on cs-server (this is actually where named constants get put by ~st10/funct_play2, so they're visible to those using those functions)
  • cheesy.cpp - poorly-named function that cheesily uses rect_area to compute the area of a square; built in lab using ~st10/funct_play2
  • cheesy.h - header file for function cheesy built in lab using ~st10/funct_play2 on cs-server
  
  
• Week 11 Lecture - intro to C++! compiling vs. interpreting, intro to basic types and expressions, intro to simple functions
  • "projected" notes from lecture
  • circ_area.cpp - non-named-constant version of circ_area built in lecture using ~st10/funct_play2 on cs-server
  • circ_area.h - header file for non-named-constant version of circ_area built in lecture using ~st10/funct_play2 on cs-server
  
  
• Week 9 Lecture - intro to file input/output, intro to Python lists (Python's more-powerful stand-in for 1-dimensional arrays)
  • "projected" notes from lecture
  • lyrics.txt - little example text file used in lecture reading examples
  • showit.py - example function that reads from a file
  • writeSquares.py - example function that writes to a file
    
    
  • in case you are interested: links to www.python.org documentation on open function and file object methods
    • open built-in function - Python Library Reference: Section 2.1 - Built-in Functions - scroll down to see description of open built-in function
    • File methods - from Python Library Reference: Section 3.9 - File Objects
  
  
• Week 8 Lab - there WASN'T one, BUT for your study purposes, here is not-really-a-lab-exercise...
  • NOTE: this wasn't really handed out, and you are not required to turn it in. It would be WISE for you to read it over, try it, and then check the answers available from the course Moodle site, however!!
  • Not-Really-A-Week-8-Lab-Exercise Handout
  • asking_profits.py
  
  
• Week 8 Lecture - sentinel-controlled loops, loop-debugging tip
  • "projected" notes from lecture
  • sent.py - "skeleton" for a sentinel-controlled loop
  • lect08.py - other Week 8 lecture examples
  • profit_ex.py - the profit/revenue/cost/attendance collection, since some of these are called in lect08.py
  
  
• Week 7 Lab - Intro to Repetition: while loops, continued
  • "projected" notes from lab
  • spam2.py - a count-controlled loop example VERY similar to spam1.py...
  • spam3.py - ...now ASKING for the number of times to print the message (but still a count-controlled loop!)
  • profit_ex.py - the profit/revenue/cost/attendance collection, since profit is used below
  • event1.py - an example of an event-controlled loop
  
  
• Week 7 Lecture - Intro to Repetition: while loops
  • "projected" notes from lecture
  • profit_ex.py - the profit/revenue/cost/attendance collection, since profit is used below
  • diff_profits1.py - why one might WANT repetition...
  • diff_profits2.py - example with a while loop
  • diff_profits3.py - more-flexible example with a while loop
  • spam1.py - example with a "classic" count-controlled while loop
  
  
• Week 6 Lab - continuing with Section 5 topics: local variables, interactive output, interactive input, and functions with side-effects
  • "projected" notes from lecture
  • lab06.py - function examples from during lecture
  
  
• Week 6 Lecture - wrap up of HtDP Packet Section 4 (bool, conditions, and if-statement, with resulting modification to design recipe), beginning of Section 5 (functions with side-effects)
  • "projected" notes from lecture
  • lect06.py - function examples from during lecture
  
  
• Week 4 Lecture - intro to bool, conditions, and a conditional statement
  • "projected" notes from lecture
  • lect04.py - function examples from during lecture
  
  
• Week 3 lab - walking through example of design recipe and auxiliary functions
  • profit_ex.py - contains the resulting profit/revenue/cost/attendees functions
  
  
• Week 3 lecture - intro to the design recipe, auxiliary functions
  • "projected" notes from lecture
  • lect03.py - function examples from during lecture (supplemented after lecture so that all now include tests)
  
  
• Week 2 lecture - intro to numbers, expressions, and functions
  • some random notes related to the Week 2 Lecture
    
    
  • Python operator precedence chart (from Python Reference Manual)
  • Python identifier syntax (from Python Reference Manual)
  • lect02.py - function examples from during lecture