GridLife.io-Learn-Tutorial-CSharp30

Program.cs

// // See https://aka.ms/new-console-template for more information
// Console.WriteLine("Hello, World! From C#");

// //=========================
// //COMMENTS
// //Single Line Comments

// /*
// 	Multiple line comments
// */

// //=========================
// //VARIABLES - PRIMITIVE (except for string)
// byte myByte = 100;
// int five = 5;
// double onepointone = 1.1;
// bool ImTrue = true;
// char myChar = 'X';
// string myString = "A Set of Characters";  //Not a reference type
// Console.WriteLine($"Hello here are my primitive variable types {myByte} {five}, {onepointone}, {ImTrue}, {myChar}, {myString}");

// //=========================
// //OPERATORS:
// //Arithmetic
// int resultAddition = 5 + 3; // resultAddition is 8
// int resultSubtraction = 10 - 4; // resultSubtraction is 6
// int resultMultiplication = 7 * 6; // resultMultiplication is 42
// Console.WriteLine($"Addition: {resultAddition}");
// Console.WriteLine($"Subtraction: {resultSubtraction}");
// Console.WriteLine($"Multiplication: {resultMultiplication}");

// // Assignment
// int value = 10;
// int resultAssignment = value; // resultAssignment is 10
// value += 5; // value is now 15
// value -= 3; // value is now 12
// Console.WriteLine($"Assignment: {resultAssignment}");
// Console.WriteLine($"Addition Assignment: {value}");
// Console.WriteLine($"Subtraction Assignment: {value}");

// // Comparison
// int a = 10;
// int b = 5;
// bool isEqual = (a == b); // isEqual is false
// bool isNotEqual = (a != b); // isNotEqual is true
// Console.WriteLine($"Equality: {isEqual}");
// Console.WriteLine($"Inequality: {isNotEqual}");

//=========================
//STRUCTS:
// Structs help us improve how we organize data
// Instead of this we can use a struct
// int PointX = 5;
// int PointY = 5;

// public struct Point
// {
//     public int X;
//     public int Y;
// }

// class Program
// {
//     static void Main()
//     {

//         Point myPoint = new Point(); // Create a Point struct and initialize its fields
//         myPoint.X = 10;
//         myPoint.Y = 20;

//         // Write the data from the Point struct to the console
//         Console.WriteLine($"X: {myPoint.X}, Y: {myPoint.Y}");
//     }
// }


//=========================
//REF-TYPES:  CLASSES

// Define a simple class
// class Person
// {
//     // Fields
//     public string Name;
//     public int Age;

//     // Method
//     public void SayHello(string personA)
//     {
//         Console.WriteLine($"Hello, my name is {Name} and I am {Age} years old.");
//     }

// }

// class Program
// {
//     static void Main()
//     {
//         // Create an instance of the Person class
//         Person person1 = new Person();
//         person1.Name = "Alice";
//         person1.Age = 30;

// 		Person person2 = new Person();
// 		person2.Name = "Cory";
// 		person2.Age  = 48;

//         // Call the SayHello method
//         person1.SayHello('Cory');
//     }
// }



//=========================
//REF-TYPES:  INTERFACE
// interface IDrawable
// {
//     void Draw();
// 	void Foo();
// }

// // Implement the interface in a class
// class Circle : IDrawable
// {
// 	public void Draw()
//     {
//         Console.WriteLine("Drawing a circle.");
//     }
// 	public void Foo()
//     {
//         Console.WriteLine("Drawing a circle.");
//     }
// }

// class Program
// {
//     static void Main()
//     {
//         // Create an instance of the Circle class
//         Circle circle = new Circle();
//         // Call the Draw method defined in the interface
//         circle.Draw();
//     }
// }



//=========================
//REF-TYPES:  DELEGATE

// Define a delegate type
// delegate void MyDelegate(string message);

// class Program
// {
//     static void Main()
//     {
//         // Create an instance of the delegate
//         MyDelegate delegateInstance = DisplayMessage;

//         // Call the delegate
//         delegateInstance("Hello from the delegate!");
//     }

//     // Define a method with the same signature as the delegate
//     static void DisplayMessage(string message)
//     {
//         Console.WriteLine(message);
//     }
// }


//=========================
//REF-TYPES:  ARRAY
// class Program
// {
//     static void Main()
//     {
//         // Create an array of integers
//         int[] numbers = { 1, 2, 3, 4, 5 };
// 		string[] strings = { "test", "foo" };

//         // Access and display array elements
//         Console.WriteLine("Array Elements:");
//         foreach (string s in strings)
//         {
//             Console.WriteLine(s);
//         }
//     }
// }


//=========================
//CONTROL STRUCTURE:  IF
// class Program
// {
//     static void Main()
//     {
//         int num = 42;

//         // Using an if statement to check a condition
//         if (num > 50)
//         {
//             Console.WriteLine("The number is greater than 50.");
//         }
//         else if (num == 50 && num > 49)
//         {
//             Console.WriteLine("The number is equal to 50.");
//         }
//         else
//         {
//             Console.WriteLine("The number is less than 50.");
//         }
//     }
// }


//=========================
//CONTROL STRUCTURE:  SWITCH

// class Program
// {
//     static void Main()
//     {
//         int dayOfWeek = 15;
//         string dayName;

//         // Using a switch statement to match a value
//         switch (dayOfWeek)
//         {
//             case 1:
//                 dayName = "Monday";
//                 break;
//             case 2:
//                 dayName = "Tuesday";
//                 break;
//             case 3:
//                 dayName = "Wednesday";
//                 break;
//             case 4:
//                 dayName = "Thursday";
//                 break;
//             case 5:
//                 dayName = "Friday";
//                 break;
//             default:
//                 dayName = "Weekend";
//                 break;
//         }

//         Console.WriteLine($"Today is {dayName}.");
//     }
// }



//=========================
//LOOP STRUCTURES:  
class Program
{
    static void Main()
    {
        // for loop
        Console.WriteLine("Using a for loop:");
        for (int i = 0; i < 5; i++)
        {
            Console.WriteLine($"Iteration {i + 1}");
        }

        // while loop
        Console.WriteLine("\nUsing a while loop:");
        int count = 0;
        while (count < 3)
        {
            Console.WriteLine($"Count: {count}");
            count++;
        }

        // do-while loop
        Console.WriteLine("\nUsing a do-while loop:");
        int x = 5;
        do
        {
            Console.WriteLine($"Value of x: {x}");
            x--;
        }
        while (x > 0);

        // foreach loop
        Console.WriteLine("\nUsing a foreach loop:");
        int[] numbers = { 1, 2, 3, 4, 5 };
        foreach (int number in numbers)
        {
            Console.WriteLine($"Number: {number}");
        }

        // break and continue
        Console.WriteLine("\nUsing break and continue:");
        for (int i = 0; i < 5; i++)
        {
            if (i == 2)
            {
                Console.WriteLine("Skipping iteration 2");
                continue;
            }
            if (i == 4)
            {
                Console.WriteLine("Breaking loop at iteration 4");
                break;
            }
            Console.WriteLine($"Iteration {i + 1}");
        }
    }
}

To use this file simply uncomment each class Program { ... } section and build and run your project.
Additional Information can be found here: gridlife.io/csharp30