Outcomes:

●   Working with C# as one of Imperative Programming Languages

●   Understanding how C# works and some of the difficulties

●   Working with some of C# features

●   Working with files in C#

●   Solving problems using C#

●   Running and testing C# codes

Scoring (465/565):

●   (5  points) submission on Git with 10 or more commits. Your Git history should represent the progress of your work.

●   (17 points) Using all of the following C# features:

○   (8 pts) Use of Object-Oriented Programming :

■   Design a logical and practical hierarchy of classes/structs with at least one superclass and a subclass (3 pts).

■   Using setter and getter methods (2 pts).

■   Override an operator, which could be either a logical operator, or a mathematical operator (2 pts).

■   Override a method (1 pt).

○   (1 pt) Aliases.

○   (1 pt) Matrix Array.

○   (1 pt) Data Structures

○   (2 pts) Delegate.

○   (2 pts) Nullable Variable.

○   (2 pts) Different types of parameter variables.

●   (24 points) Successful implementation of 3(undergraduate)/4(graduate) problems.

●   (4 points) The execution time and style of your code including indentation, comments, etc.

●   (5 bonus points) Pointers are used effectively.

Requirements:

●   On your laptop, add a new folder inside your CSE465_565 folder, and call it Homework4  .

●   Download  Hw4.cs, zipcodes.txt, zips.txt, cities.txt, and states.txt from canvas and put them inside the Homework4 folder.

Instructions:

1.   In your project, you are free to create as many classes within the Hw4.cs file or across multiple files as you need. However, ensure that the Hw4.cs file is the only one that contains a Main method. This method should be within a class named hw4. This specific setup is crucial because your instructor will use the hw4 class to execute and evaluate your work.

2.   The programs will process the datafile zipcodes.txt which contains over 81K lines of text, one line for each geographic location in the US territories.

。 The first line of the file is the header line that explains each column of the data.

。 Except the first line, all other lines are tab-separated.

3.   When Hw4.cs is run, it should create the following output files:

。 CommonCityNames.txt : contains all the common city names that appear in all of the states listed in states.txt.

i.       Each city in the file must be unique, no duplicate names allowed.

ii.      The cities should appear in sorted order.

iii.      The cities should appear one per line.

。  LatLon.txt : for each zip code listed in zips.txt, there will be a corresponding line of output. Each output line will list the zip code’s latitude and longitude.

i.      The latitude and longitude must be separated by a space on each line.

ii.       If a zip code has multiple entries, provide the first one listed in zipcodes.txt.

。 Aliases.

。 Matrix Array.

。 Proper Data Structures.

。 Delegate.

。 Nullable Variable.

。 Different types of parameter variables.

5.   Clarity and correctness is the primary consideration when writing your codes.

6.    Performance is the secondary concern; however, using obviously wasteful and brute force approaches will result in a loss of points.

7.   You can compile and execute your code via Command Line (CMD)/Terminal using the following commands:

。 mcs   *.cs (compile)

。 mono   Hw4.exe (execute)

8.   Commit and push your work right after any small progress. Your Git should demonstrate the progression of your work.

。 Adding or removing empty lines or spaces in one commit, does not add authenticity to your work.

。 Committing and pushing large volumes of code within a very short timeframe, such as minutes or seconds apart, can  raise doubts about  the work's  originality.  Producing significant amounts of code this quickly is unrealistic and may indicate that the code is copied from another source. Genuine coding usually requires more development time and deliberate, thoughtful submission of changes.

9.   The  execution time and style of your code,  including indentation and comments, should  be acceptable. Brute force approaches which lead to very slow programs, and a lack of clarity will result in a loss of points.

Bonus Points:

To  earn 5  bonus points on your assignment, you need to use pointers effectively in your program. Additionally, you must clearly indicate where you have used these pointers in your code. Here'show you do it:

●   Use pointers in your code where it makes sense and helps with the performance of your code.

●   At the very beginning of your Hw4.cs file, add special comments (the format is explained below) to point out exactly where in your code you've used pointers.

For example, if you used pointers between lines 10 and 15, and again between lines 40 and 63, you should add these lines at the top of your Hw4.cs file:

// => Used Pointers from lines 10 to 15 <=

// => Used Pointers from lines 40 to 63 <=

Replace "10" and "15" with the starting and ending lines of the first section where you used pointers, and "40" and "63" with the starting and ending lines of the second section where pointers are utilized.