static void Main(string[] args)
{
//Create a new Animal object
Animal spot = new Animal(15, 10, "Spot", "Woof");
//Print info about the Animal object
Console.WriteLine("{0} says {1}", spot.name, spot.sound);
//Get the number of Animal objects. You need the class name for static methods
//as they belong to the class itself, not the objects
Console.WriteLine("Number of Animals = " + Animal.getNumOfAnimals());
//Print the Animal object's information
Console.WriteLine(spot.toString());
//METHOD OVERLOADING:
//-------------------------
Console.WriteLine(spot.getSum(1, 2)); //The integer version
Console.WriteLine(spot.getSum(1.4, 2.7)); //The double version
Console.WriteLine(spot.getSum(num2: 2.7, num1: 1.4)); //The different-order version
//Create a new Animal object using the Object Initialiser:
Animal grover = new Animal
{
name = "Grover",
height = 16,
weight = 18,
sound = "Grrrr"
};
//The total number of Animals has increased
Console.WriteLine("Number of Animals = " + Animal.getNumOfAnimals());
Dog spike = new Dog();
Console.WriteLine(spike.toString());//Display the default initialised Dog Object spike
//Overwrite spike's information
spike = new Dog(20, 15, "Spike", "Grr", "Chicken");
Console.WriteLine(spike.toString());//Display the overwritten Dog Object spike
//POLYMORPHISM USING ABSTRACT CLASSES:
//----------------------------------------------------------------------------------------------------------
//Both Shapes but one is a Rectangle and the other a Triangle
//Since both are Shapes, they can go into Shape arrays despite technically being different classes
Shape rect = new Rectangle(5, 5);
Shape tri = new Triangle(5, 5);
//Polymorphism makes it so that the correct area() method is called for each
Console.WriteLine("Area of rect = " + (rect.area()));
Console.WriteLine("Area of tri = " + (tri.area()));
//The following will work thanks to the Operator Overloading done in the Rectangle class
Rectangle combRect = new Rectangle(5, 5) + new Rectangle(5, 5);
//Display combRect's area
Console.WriteLine("Area of combRect = " + (combRect.area()));
//GENERICS CONTINUED:
//-----------------------------------------------------
KeyValue <string, string> superman = new KeyValue <string, string>("", "");
superman.key = "Superman";
superman.value = "Clark Kent";
KeyValue <int, string> samsungTV = new KeyValue <int, string>(0, "");
samsungTV.key = 12345;
samsungTV.value = "a 50-inch Samsung TV";
superman.showData();
samsungTV.showData();
//ENUMERATED TYPES(ENUMs) CONTINUED:
//---------------------------------------------------
Temperature micTemp = Temperature.Warm;
switch (micTemp)
{
case Temperature.Freeze:
Console.WriteLine("Temp on Freezing");
break;
case Temperature.Low:
Console.WriteLine("Temp on Low");
break;
case Temperature.Warm:
Console.WriteLine("Temp on Warm");
break;
case Temperature.Boil:
Console.WriteLine("Temperature on Boil");
break;
}
//STRUCTS CONTINUED:
//------------------------------------------------------------------------
Customers bob = new Customers();
bob.createCust("Bob", 15.50, 12345);
bob.showCust();
//DELEGATES CONTINUED:
//------------------------------------------------------------------------
//An anonymus method has no name and it's return type is defined by the return used in the method
GetSum sum = delegate(double num1, double num2)
{
return(num1 + num2);
};
Console.WriteLine("5 + 10 = " + sum(5, 10));
//Lamda expressions: Used to act as an anonymus function or an expression trait
//Can assign the Lamda expression to a function instance
Func <int, int, int> getSum = (x, y) => x + y;
Console.WriteLine("5 + 3 = " + getSum.Invoke(5, 3));
//They're often used with lists:
List <int> numList = new List <int> {
5, 10, 15, 20, 25
};
List <int> oddNums = numList.Where(n => n % 2 == 1).ToList();//Place all odd numbers in the oddNums List
foreach (int num in oddNums)
{
Console.WriteLine(num + ", ");
}
//FILE I/O:
//-----------------------------------------------------------------------------------------------
string[] custs = new string[] { "Tom", "Paul", "Greg" };
//Create custs.txt if it doesn't exist and write to it:
//HAD TO MAKE CustomerStorage FOLDER MYSELF!!!!!!!
using (StreamWriter sw = new StreamWriter("CustomerStorage/custs.txt"))
{
foreach (string cust in custs)
{
Console.WriteLine("Adding {0} to the file", cust);
sw.WriteLine(cust);
}
}
//Read the contents of custs.txt until you reach the end:
string custName = "";
//HAD TO MAKE CustomerStorage FOLDER MYSELF!!!!!!!
using (StreamReader sr = new StreamReader("CustomerStorage/custs.txt"))
{
while ((custName = sr.ReadLine()) != null)
{
Console.WriteLine(custName);//Display the contents of custs.txt
}
}
//Used to keep the window open. C#'s version of C's getchar()
Console.ReadKey();
}