Kursusindhold

C# Basics

1. Getting Started

Why C#?C# Syntax Displaying Output Challenge: Outputting a Triangle Comments Challenge: Comments Variables Identifiers Challenge: Variable Declaration Basic Operators & Expressions Challenge: Operators

2. Dealing with Data Types

Integer Data Types Challenge: Declaring Explicitly Typed Variables Floating-Point and Double Booleans Character String Strings Challenge Basic String Formatting Challenge: String Formatting Declaring Constants Basic Type Casting Type Casting Practice Basic Type Conversion Basic Coding Practice

3. Control Structures

Comparison Operators Logical Operators Challenge: Operators Order of Operations If Statement Challenge: if Condition else Keyword Challenge: else Keyword if-else Chain Challenge: if, else-if, else switch Statement Challenge: Switch

4. Loops

for Loop Challenge: for Loop while Loop do-while Loop Challenge: do-while Loop break Statement continue Statement Challenge: break and continue

5. Arrays

What are Arrays?Challenge: Array Declaration Indexing Challenge: Indexing Multi-Dimensional Arrays Challenge: Multi-Dimensional Arrays Looping through Arrays Challenge: Array Loops

6. Methods

What are Methods?Creating and Calling Methods Challenge: Methods Creation Method Parameters Challenge: Method with Parameters Method Return Values Challenge: Return Values Local & Global Scopes Challenge: Scopes What's Next?

String

A string is a sequence of characters. Strings are used for storing textual data.

main.cs


              1234567891011121314
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string text = "Hello, World!";
			Console.WriteLine(text); // Output: Hello, World!
        }
    }
}

String data, or text, is always enclosed in double quotation marks (").

While arithmetic operations cannot be performed on strings, the plus (+) operator can be used to join two strings together. This process is known as string concatenation.

main.cs


              123456789101112131415
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string partOne = "The first sentence. ";
			string partTwo = "The second sentence.";
			string combined = partOne + partTwo;
			Console.WriteLine(combined); // Output: The first sentence. The second sentence.
        }
    }
}

We can use the new line character (\n) to represent a new line in string data.

Consider the following example:

main.cs


              12345678910111213
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string text = "The first line.\nThe second line.";
			Console.WriteLine(text);
        }
    }
}

When the \n character is encountered, the text automatically shifts to a new line. We can use multiple newline characters to skip multiple lines:

main.cs


              12345678910111213
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string text = "The first line.\n\n\nThe second line.\nThe third line.";
			Console.WriteLine(text);
        }
    }
}

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Sektion 2. Kapitel 6

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Kursusindhold

C# Basics

1. Getting Started

2. Dealing with Data Types

3. Control Structures

4. Loops

for Loop Challenge: for Loop while Loop do-while Loop Challenge: do-while Loop break Statement continue Statement Challenge: break and continue

5. Arrays

What are Arrays?Challenge: Array Declaration Indexing Challenge: Indexing Multi-Dimensional Arrays Challenge: Multi-Dimensional Arrays Looping through Arrays Challenge: Array Loops

6. Methods

String

A string is a sequence of characters. Strings are used for storing textual data.

main.cs


              1234567891011121314
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string text = "Hello, World!";
			Console.WriteLine(text); // Output: Hello, World!
        }
    }
}

String data, or text, is always enclosed in double quotation marks (").

While arithmetic operations cannot be performed on strings, the plus (+) operator can be used to join two strings together. This process is known as string concatenation.

main.cs


              123456789101112131415
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string partOne = "The first sentence. ";
			string partTwo = "The second sentence.";
			string combined = partOne + partTwo;
			Console.WriteLine(combined); // Output: The first sentence. The second sentence.
        }
    }
}

We can use the new line character (\n) to represent a new line in string data.

Consider the following example:

main.cs


              12345678910111213
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string text = "The first line.\nThe second line.";
			Console.WriteLine(text);
        }
    }
}

When the \n character is encountered, the text automatically shifts to a new line. We can use multiple newline characters to skip multiple lines:

main.cs


              12345678910111213
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			string text = "The first line.\n\n\nThe second line.\nThe third line.";
			Console.WriteLine(text);
        }
    }
}

Var alt klart?

Tak for dine kommentarer!

Sektion 2. Kapitel 6