Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.While Loop | Loops
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 TypesDeclaring Explicitly Typed VariablesFloating-Point and DoubleBooleansCharacterStringStrings ChallengeBasic String FormattingString Formatting PracticeDeclaring ConstantsBasic Type CastingType Casting PracticeBasic Type ConversionBasic Coding Practice
3. Control Structures
Comparison OperatorsLogical OperatorsOperators ChallengeOrder of Operationsif statementif-condition Challengeelse Keywordelse Keyword Practiceif-else ChainTask (if, else-if, else)switch StatementPracticing Switch
4. Loops
For LoopPracticing For LoopWhile LoopDo-While LoopPracticing Do-While Loopbreak statementcontinue statementPracticing break and continue
5. Arrays
What are Arrays?Practicing Array DeclarationIndexingIndexing PracticeMulti-Dimensional ArraysPracticing Multi-Dimensional ArraysLooping through ArraysArray Loops Challenge
6. Methods
What are Methods?Creating and Calling MethodsMethods Creation PracticeMethod ParametersPracticing Method with ParametersMethod Return ValuesPracticing Return ValuesLocal & Global ScopesPracticing ScopesWhat's Next?

bookWhile Loop

A while loop is similar to a for-loop, however, it is used when we need to execute a block of code repeatedly based on a condition. The syntax of a while-loop is simpler than that of a for-loop:

Example:

cs

main

copy

              
12345678910111213141516

            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			int i = 0;
			while(i < 5) {
    			Console.WriteLine(i);
    			i++;
			}
        }
    }
}

The following diagram shows the execution process of a while loop:

Although the while loop may seem very similar to the for-loop at first, In more advanced levels of programming the difference becomes apparent. We might explore the usage of different kinds of loops in the Arrays section.

Tip: We can write true as the condition of a while-loop to create an infinite loop:

cs

main

copy

              
123

            
while(true) {
    Console.WriteLine("Hello World");
}
How many iterations will the following loop have?

How many iterations will the following loop have?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 4. Chapter 3
some-alt