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C# Basics
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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
If Statement

An if statement, also known as conditional statement, is a method of executing a block of code based on a condition. The syntax of an if statement is the following:

javascript

It takes an expression and executes the code block if the expression is true.

For example:

cs

main

copy

              
12345678910111213141516

            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			Console.WriteLine("Before Conditional");
			if(10 > 9) {
    			Console.WriteLine("10 is greater than 9");
			}
			Console.WriteLine("After Conditional");
        }
    }
}

In case the condition is false the code block is ignored:

cs

main

copy

              
12345678910111213141516

            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			Console.WriteLine("Before Conditional");
			if(10 > 10) {
    			Console.WriteLine("10 is greater than 9");
			}
			Console.WriteLine("After Conditional");
        }
    }
}
question mark

What is the output of the following code:

Select the correct answer

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