Difference between revisions of "Intro Week 6"
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} | } | ||
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Simple arrays and multidimensional arrays | Simple arrays and multidimensional arrays | ||
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public double GPA; | public double GPA; | ||
} | } | ||
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<csharp> | <csharp> | ||
struct player | struct player | ||
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public difficulty playerLevel; | public difficulty playerLevel; | ||
} | } | ||
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In class demo coins | In class demo coins | ||
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{ | { | ||
return "Hello " + Name; | return "Hello " + Name; | ||
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Calling a finction in c# | Calling a finction in c# | ||
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firstHello = Hello(); //call the function Hello | firstHello = Hello(); //call the function Hello | ||
jeffHello = HelloToName("Jeff"); //call the function HelloToName | jeffHello = HelloToName("Jeff"); //call the function HelloToName | ||
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Console Example | Console Example | ||
Revision as of 18:19, 25 January 2016
Review Arrays
Review Generic Lists
<csharp> List<int> scores = new List<int>(); //A list of ints
List<string> names = new List<string>(); //A list of strings
//add some ints to the scores list scores.Add(100); scores.Add(7);
//Add some names to the names list names.Add("Jeff"); names.Add("Uncle Eddie");
foreach(string name in names) {
Console.WriteLine(name);
}
</syntaxhighlight>
Simple arrays and multidimensional arrays
Struct
Structures -struct are composed of several pieces of data that can be of different types.
<csharp> struct student { public int oasis id; public string name; public double GPA; } </syntaxhighlight> <csharp> struct player { public int playerID; public string playerName; public difficulty playerLevel; } </syntaxhighlight>
In class demo coins Quarter class *Mint *Year
Coin class *Mint *Year *Value
Functions/Methods
Function help with code reuse. If your going to use it more than once make it into a funtions. syntax simple
[access-modifier] return type indentifier ( [parateters] )
{
//some code
}
access-modifiers
public : mean that this method can be called from anywhere else in the program
Static
- static means that
Defining
<csharp>public static string Hello () {
return "Hello ";
}
public static string HelloToName (string Name) {
return "Hello " + Name;
}</syntaxhighlight>
Calling a finction in c#
<csharp>string firstHello, jeffHello; //declare some strings firstHello = Hello(); //call the function Hello jeffHello = HelloToName("Jeff"); //call the function HelloToName </syntaxhighlight>
Console Example /infod/jeff/classSource/class3/function.cs - source
Hello World! Hello Hello Jeff Hello Marge C:\User\csharp>
Home work
Sweet card program http://iam.colum.edu/introtoprogramming/Jeff/SP10/ConsoleApplicationStructs.zip have it for super freeeee as in free beer
Write a csharp program that uses a coin struct to make a coin collection
start with
12 quarters
22 dimes
5 nickels
and 174 pennies.
After you have made the coin collection (Array or List). Write a method that can calculate the value of the collection.
Bonus
write a csharp program that can make correct change given an amount of money.
ie type in 1.08 and it will give back a coin collection of
4 quarters
1 nickel
3 pennies
