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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
Challenge: Scopes

There are three variables in the following code. Fill in the blanks with variable names such that the code compiles successfully:

cs

main

copy

              
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using System;

namespace ConsoleApp
{       
    class Program
    {
        static int var1 = 10;
        static void Main(string[] args)
        {
            int var2 = 11;
            if(var1 > 5)
            {
                Console.WriteLine(___);
            }
            else
            {
                int var3 = 12;
                Console.WriteLine(___);
            }
        }
        static void output()
        {
            Console.WriteLine(___);
        }
    }
}

Global scoped variables can be accessed inside all methods.

cs

main

copy

              
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using System;

namespace ConsoleApp
{
    class Program
    {
        static int var1 = 10;

        static void Main(string[] args)
        {
            int var2 = 11;

            if(var1 > 5)
            {
                Console.WriteLine(var2);
            }
            else
            {
                int var3 = 12;
                Console.WriteLine(var3);
            }
        }

        static void output()
        {
            Console.WriteLine(var1);
        }
    }
}

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Section 6. Chapter 9
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