McT

Oct 28

You have a credit card debt of $500. The interest rate on your card is 18.50%. If you were to pay the minimum payment fee of $10.00 per month you want to know how many months it will take and how much you will pay in total. Your output should show your credit card balance by month. i.e.:

• Month 1: $500
• Month 2: $500 + 500*0.1850/12 - 10

You main program should loop until the balance is less than or equal to 0 and then call a function to calculate the balance for the month. You will want to set default values for the Interest Rate, credit card debt and payment amount but allow the user to input different values.

Data Validation
Oct 22

Your challenge today is to create a plan using pseudocode or flowchart (draw.io) for a function that will be used to validate a postal code. It should take a string as a parameter (which represents the postal code) and return boolean if it fits the pattern letter number letter (optional space) number letter number.

Functions
Oct 21

public void myFuntion(){
    //Code goes here
  }
    

public - access modifier

void - return type - use void if nothing returned. Otherwise the data type of what you want to return (i.e. int)

myFunction - the name that you will use to call your function

() - parameters - since this was empty there were no parameters. If you had variable type and name then that is the parameter you are passing. i.e.

public void calcArea(int length, int width){}

{} - this is where you will put the code. If it returns a value you MUST use return somevalue in the function.

U3D1 Arrays

An array holds a series of data.

Declare an array

int[] marks;

Instantiate an array

marks = new int[4]

Initialize the values in an array

marks[0] = 95;
marks[1] = 90;
marks[2] = 98;
marks[3] = 75;

-or-
marks = {95,90,98,75};
    

Please note - you can use a for loop to quickly loop through each element.

.Length property

marks.Length returns a value of 4 - there are 4 elements. Note that the elements are numbered starting at 0 so to access the last element you use the index value of 3.

for(int i = 0; i < marks.Length; i++)
{
  rtbOutput.Text += marks[i].ToString() + "\n";
}
    

U2D7 Databases

Databases are integral in todays world. SQL (Structured Query Language) is the language of data. Microsoft Access is an good way to learn how releational databases are set up. When you get dealing with a website you will likely have access to a MySql database, SQLite for mobile phones.

Microsoft Access training

U2D5 Constructors

A Constructor is a method that has the same name as the class. Any code that is to run when the instance of the object is created goes here. For example out deck of cards class constructor will initialize the array of cards. View the deck class here.

Object Oriented programming consists of three features:

• Polymorphism
• Encapsulation
• Abstraction

Learn more about OOP and C# here.

U2D1 Save and Open Files

A programmer’s wife sends him to the grocery store with the instructions, “get a loaf of bread, and if they have eggs, get a dozen.” He comes home with a dozen loafs of bread and tells her, “they had eggs.”
Big Idea: Be able to save and open files in programs.
Minds on: How data is stored
Activity: Create Contact book saver

If time we will add the ability to save and open using other formats (xml, serialization)
Consolidation: Show off