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C# Basics
course content

Course Content

C# Basics

C# Basics

1. Getting Started
Why C#?C# SyntaxDisplaying OutputChallenge: Outputting a TriangleCommentsChallenge: CommentsVariablesIdentifiersChallenge: Variable DeclarationBasic Operators & ExpressionsChallenge: Operators
2. Dealing with Data Types
Integer Data TypesChallenge: Declaring Explicitly Typed VariablesFloating-Point and DoubleBooleansCharacterStringStrings ChallengeBasic String FormattingChallenge: String FormattingDeclaring ConstantsBasic Type CastingType Casting PracticeBasic Type ConversionBasic Coding Practice
3. Control Structures
Comparison OperatorsLogical OperatorsChallenge: OperatorsOrder of OperationsIf StatementChallenge: if Conditionelse KeywordChallenge: else Keywordif-else ChainChallenge: if, else-if, elseswitch StatementChallenge: Switch
4. Loops
for LoopChallenge: for Loopwhile Loopdo-while LoopChallenge: do-while Loopbreak Statementcontinue StatementChallenge: break and continue
5. Arrays
What are Arrays?Challenge: Array DeclarationIndexingChallenge: IndexingMulti-Dimensional ArraysChallenge: Multi-Dimensional ArraysLooping through ArraysChallenge: Array Loops
6. Methods
What are Methods?Creating and Calling MethodsChallenge: Methods CreationMethod ParametersChallenge: Method with ParametersMethod Return ValuesChallenge: Return ValuesLocal & Global ScopesChallenge: ScopesWhat's Next?

book
String

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

cs

main

copy

              
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.

cs

main

copy

              
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:

cs

main

copy

              
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:

cs

main

copy

              
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);
        }
    }
}
question mark

What will be the output of the following code?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 2. ChapterΒ 6
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