diff --git a/Introduction/.editorconfig b/Introduction/.editorconfig
new file mode 100644
index 0000000..3159b2a
--- /dev/null
+++ b/Introduction/.editorconfig
@@ -0,0 +1,14 @@
+root=true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = tab
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.cs]
+indent_style = space
+indent_size = 4
+
diff --git a/Introduction/.gitignore b/Introduction/.gitignore
new file mode 100644
index 0000000..26ab8f4
--- /dev/null
+++ b/Introduction/.gitignore
@@ -0,0 +1,388 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Nuget personal access tokens and Credentials
+# nuget.config
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+.idea/
+*.sln.iml
diff --git a/Introduction/Introduction.1Savarankiskas/Introduction.1Savarankiskas.csproj b/Introduction/Introduction.1Savarankiskas/Introduction.1Savarankiskas.csproj
new file mode 100644
index 0000000..33887e8
--- /dev/null
+++ b/Introduction/Introduction.1Savarankiskas/Introduction.1Savarankiskas.csproj
@@ -0,0 +1,9 @@
+
+
+
+ Exe
+ netcoreapp2.1
+ Introduction._1Savarankiskas
+
+
+
diff --git a/Introduction/Introduction.1Savarankiskas/Program.cs b/Introduction/Introduction.1Savarankiskas/Program.cs
new file mode 100644
index 0000000..871fa45
--- /dev/null
+++ b/Introduction/Introduction.1Savarankiskas/Program.cs
@@ -0,0 +1,29 @@
+using System;
+
+namespace Introduction._1Savarankiskas
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Įveskite simbolių kiekį: ");
+ int count = int.Parse(Console.ReadLine());
+
+ Console.WriteLine("Įveskite vienos eilutės simbolių kiekį: ");
+ int perLineCount = int.Parse(Console.ReadLine());
+
+ Console.WriteLine("Įveskite spausdinamą simbolį: ");
+ char character = (char)Console.Read();
+
+ for (int i = 0; i < Math.Ceiling((double)count/perLineCount); i++)
+ {
+ for (int j = 0; j < Math.Min(perLineCount, count-perLineCount * i); j++)
+ Console.Write(character);
+ Console.WriteLine("");
+ }
+
+ Console.WriteLine("");
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.2Savarankiskas/Introduction.2Savarankiskas.csproj b/Introduction/Introduction.2Savarankiskas/Introduction.2Savarankiskas.csproj
new file mode 100644
index 0000000..8b3541f
--- /dev/null
+++ b/Introduction/Introduction.2Savarankiskas/Introduction.2Savarankiskas.csproj
@@ -0,0 +1,9 @@
+
+
+
+ Exe
+ netcoreapp2.1
+ Introduction._2Savarankiskas
+
+
+
diff --git a/Introduction/Introduction.2Savarankiskas/Program.cs b/Introduction/Introduction.2Savarankiskas/Program.cs
new file mode 100644
index 0000000..62b5971
--- /dev/null
+++ b/Introduction/Introduction.2Savarankiskas/Program.cs
@@ -0,0 +1,33 @@
+using System;
+
+// Variant 8.
+// f1(x) = 1/(x-5)
+// f2(x) = Math.Sqrt(x+5)
+// f3(x) = Math.Pow(x+3, 2)
+// condition 1: -3 <= x <= 0
+// condition 2: 0 < x <= 5
+namespace Introduction._2Savarankiskas
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ double result;
+ Console.WriteLine("Įveskite x reikšmę: ");
+ int x = int.Parse(Console.ReadLine());
+ if (-3 <= x && x <= 0)
+ {
+ result = 1.0/(x - 5);
+ }
+ else if (0 < x && x <= 5)
+ {
+ result = Math.Sqrt(x+5);
+ }
+ else
+ {
+ result = Math.Pow(x+3, 2);
+ }
+ Console.WriteLine(" Reikšmė x = {0}, fx = {1}", x, result);
+ }
+ }
+}
diff --git a/Introduction/Introduction.3Savarankiskas/Introduction.3Savarankiskas.csproj b/Introduction/Introduction.3Savarankiskas/Introduction.3Savarankiskas.csproj
new file mode 100644
index 0000000..5946b22
--- /dev/null
+++ b/Introduction/Introduction.3Savarankiskas/Introduction.3Savarankiskas.csproj
@@ -0,0 +1,9 @@
+
+
+
+ Exe
+ netcoreapp2.1
+ Introduction._3Savarankiskas
+
+
+
diff --git a/Introduction/Introduction.3Savarankiskas/Program.cs b/Introduction/Introduction.3Savarankiskas/Program.cs
new file mode 100644
index 0000000..425d329
--- /dev/null
+++ b/Introduction/Introduction.3Savarankiskas/Program.cs
@@ -0,0 +1,48 @@
+using System;
+
+namespace Introduction._3Savarankiskas
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Pasirinkite operaciją: + - * /");
+ char operation = (char)Console.Read();
+ Console.WriteLine("{0}", operation);
+ if (operation != '+' && operation != '-' && operation != '*' && operation != '/') {
+ Console.WriteLine("Klaidinga operacija");
+ return;
+ }
+
+ // Use up newline symbol
+ Console.ReadLine();
+ Console.WriteLine("Įveskite kairės skaičių kuris bus kairėje pusėje: ");
+ double lhs = double.Parse(Console.ReadLine());
+ Console.WriteLine("Įveskite kairės dešinėje kuris bus kairėje pusėje: ");
+ double rhs = double.Parse(Console.ReadLine());
+
+ double result = 0;
+ switch (operation) {
+ case '+':
+ result = lhs + rhs;
+ break;
+ case '-':
+ result = lhs - rhs;
+ break;
+ case '*':
+ result = lhs * rhs;
+ break;
+ case '/':
+ if (rhs == 0)
+ {
+ Console.WriteLine("negalima!");
+ return;
+ }
+ result = lhs / rhs;
+ break;
+ }
+
+ Console.WriteLine("Pilnas veiksmas: {0} {1} {2} = {3}", lhs, operation, rhs, result);
+ }
+ }
+}
diff --git a/Introduction/Introduction.4Savarankiskas/Introduction.4Savarankiskas.csproj b/Introduction/Introduction.4Savarankiskas/Introduction.4Savarankiskas.csproj
new file mode 100644
index 0000000..cbe1c15
--- /dev/null
+++ b/Introduction/Introduction.4Savarankiskas/Introduction.4Savarankiskas.csproj
@@ -0,0 +1,9 @@
+
+
+
+ Exe
+ netcoreapp2.1
+ Introduction._4Savarankiskas
+
+
+
diff --git a/Introduction/Introduction.4Savarankiskas/Program.cs b/Introduction/Introduction.4Savarankiskas/Program.cs
new file mode 100644
index 0000000..ef4130f
--- /dev/null
+++ b/Introduction/Introduction.4Savarankiskas/Program.cs
@@ -0,0 +1,26 @@
+using System;
+
+namespace Introduction._4Savarankiskas
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Koks tavo vardas? ");
+ string name = Console.ReadLine().TrimEnd();
+ if (name.EndsWith("as")) {
+ name = name.Substring(0, name.Length-2) + "ai";
+ } else if (name.EndsWith("is")) {
+ name = name.Substring(0, name.Length-2) + "i";
+ } else if (name.EndsWith("ys")) {
+ name = name.Substring(0, name.Length-2) + "į";
+ } else if (name.EndsWith("a")) {
+ // Nothing needs to change
+ /* name = name.Substring(0, name.Length-1) + "a"; */
+ } else if (name.EndsWith("ė")) {
+ name = name.Substring(0, name.Length-1) + "e";
+ }
+ Console.WriteLine("Labas, {0}!", name);
+ }
+ }
+}
diff --git a/Introduction/Introduction.CharsAndStrings.Step1/Introduction.CharsAndStrings.Step1.csproj b/Introduction/Introduction.CharsAndStrings.Step1/Introduction.CharsAndStrings.Step1.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step1/Introduction.CharsAndStrings.Step1.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step1/Program.cs b/Introduction/Introduction.CharsAndStrings.Step1/Program.cs
new file mode 100644
index 0000000..3b4a806
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step1/Program.cs
@@ -0,0 +1,15 @@
+using System;
+
+namespace Introduction.CharsAndStrings.Step1
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ for (char ch = 'a'; ch <= 'z'; ch++)
+ Console.Write("{0} ", ch);
+ Console.WriteLine("");
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.CharsAndStrings.Step2/Introduction.CharsAndStrings.Step2.csproj b/Introduction/Introduction.CharsAndStrings.Step2/Introduction.CharsAndStrings.Step2.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step2/Introduction.CharsAndStrings.Step2.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step2/Program.cs b/Introduction/Introduction.CharsAndStrings.Step2/Program.cs
new file mode 100644
index 0000000..8c234ca
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step2/Program.cs
@@ -0,0 +1,14 @@
+using System;
+
+namespace Introduction.CharsAndStrings.Step2
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ for (char ch = 'a'; ch <= 'z'; ch++)
+ Console.WriteLine("{0} - {1} ", ch, (int)ch);
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.CharsAndStrings.Step3/Introduction.CharsAndStrings.Step3.csproj b/Introduction/Introduction.CharsAndStrings.Step3/Introduction.CharsAndStrings.Step3.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step3/Introduction.CharsAndStrings.Step3.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step3/Program.cs b/Introduction/Introduction.CharsAndStrings.Step3/Program.cs
new file mode 100644
index 0000000..b5a5cfd
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step3/Program.cs
@@ -0,0 +1,18 @@
+using System;
+
+namespace Introduction.CharsAndStrings.Step3
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Įveskite raidę raidžių intervalo pradžiai");
+ char startChar = Console.ReadLine()[0];
+ Console.WriteLine("Įveskite raidę raidžių intervalo pabaigai");
+ char endChar = (char)Console.Read();
+ for (char ch = startChar; ch <= endChar; ch++)
+ Console.WriteLine("{0} - {1}", ch, (int)ch);
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.CharsAndStrings.Step4/Introduction.CharsAndStrings.Step4.csproj b/Introduction/Introduction.CharsAndStrings.Step4/Introduction.CharsAndStrings.Step4.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step4/Introduction.CharsAndStrings.Step4.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step4/Program.cs b/Introduction/Introduction.CharsAndStrings.Step4/Program.cs
new file mode 100644
index 0000000..d8eb518
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step4/Program.cs
@@ -0,0 +1,31 @@
+using System;
+
+namespace Introduction.CharsAndStrings.Step4
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ string day;
+ Console.WriteLine("Kokia šiandien savaitės diena?");
+ day = Console.ReadLine();
+ if (day == "pirmadienis")
+ Console.WriteLine("Pirmadienis - sudėtingiausia savaitės diena.");
+ else if (day == "antradienis")
+ Console.WriteLine("Antradienis – aktyvių veiksmų, Marso diena.");
+ else if (day == "trečiadienis")
+ Console.WriteLine("Trečiadienis – sandoriams sudaryti tinkamiausia diena.");
+ else if (day == "ketvirtadienis")
+ Console.WriteLine("Ketvirtadienį reikėtų imtis visuomeninių darbų.");
+ else if (day == "penktadienis")
+ Console.WriteLine("Penktadienį lengvai gimsta šedevrai, susitinka mylimieji.");
+ else if (day == "šeštadienis")
+ Console.WriteLine("Šeštadienis - savo problemų sprendimo diena.");
+ else if (day == "sekmadienis")
+ Console.WriteLine("Sekmadienį reikėtų pradėti naujus darbus.");
+ else
+ Console.WriteLine("Tokios savaitės dienos pas mus nebūna.");
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.CharsAndStrings.Step5/Introduction.CharsAndStrings.Step5.csproj b/Introduction/Introduction.CharsAndStrings.Step5/Introduction.CharsAndStrings.Step5.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step5/Introduction.CharsAndStrings.Step5.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step5/Program.cs b/Introduction/Introduction.CharsAndStrings.Step5/Program.cs
new file mode 100644
index 0000000..48df4e7
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step5/Program.cs
@@ -0,0 +1,42 @@
+using System;
+
+namespace Introduction.CharsAndStrings.Step5
+{
+ class Program {
+ static void Main(string[] args)
+ {
+ string day;
+ Console.WriteLine("Kokia šiandien savaitės diena?");
+ day = Console.ReadLine().ToLower();
+ switch (day)
+ {
+ case "pirmadienis":
+ Console.WriteLine("Pirmadienis - sudėtingiausia savaitės diena.");
+ break;
+ case "antradienis":
+ Console.WriteLine("Antradienis – aktyvių veiksmų, Marso diena.");
+ break;
+ case "trečiadienis":
+ Console.WriteLine("Trečiadienis – sandoriams sudaryti tinkamiausia diena.");
+ break;
+ case "ketvirtadienis":
+ Console.WriteLine("Ketvirtadienį reikėtų imtis visuomeninių darbų.");
+ break;
+ case "penktadienis":
+ Console.WriteLine("Penktadienį lengvai gimsta šedevrai, susitinka mylimieji.");
+ break;
+ case "šeštadienis":
+ Console.WriteLine("Šeštadienis - savo problemų sprendimo diena.");
+ break;
+ case "sekmadienis":
+ Console.WriteLine("Sekmadienį reikėtų pradėti naujus darbus, kurti planus.");
+ break;
+ default:
+ Console.WriteLine("Tokios savaitės dienos pas mus nebūna.");
+ break;
+ }
+ Console.ReadKey();
+ }
+ }
+}
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step6/Introduction.CharsAndStrings.Step6.csproj b/Introduction/Introduction.CharsAndStrings.Step6/Introduction.CharsAndStrings.Step6.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step6/Introduction.CharsAndStrings.Step6.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.CharsAndStrings.Step6/Program.cs b/Introduction/Introduction.CharsAndStrings.Step6/Program.cs
new file mode 100644
index 0000000..1121acf
--- /dev/null
+++ b/Introduction/Introduction.CharsAndStrings.Step6/Program.cs
@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+
+namespace Introduction.CharsAndStrings.Step6
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Dictionary weekDays = new Dictionary()
+ {
+ {"pirmadienis", "Pirmadienis - sudėtingiausia savaitės diena."},
+ {"antradienis", "Antradienis – aktyvių veiksmų, Marso diena."},
+ {"trečiadienis", "Trečiadienis – sandoriams sudaryti tinkamiausia diena."},
+ {"ketvirtadienis", "Ketvirtadienį reikėtų imtis visuomeninių darbų."},
+ {"penktadienis", "Penktadienį lengvai gimsta šedevrai, susitinka mylimieji."},
+ {"šeštadienis", "Šeštadienis - savo problemų sprendimo diena."},
+ {"sekmadienis", "Sekmadienį reikėtų pradėti naujus darbus, kurti planus."}
+ };
+
+ Console.WriteLine("Kokia šiandien savaitės diena?");
+ string day = Console.ReadLine().ToLower();
+ if(weekDays.ContainsKey(day))
+ Console.WriteLine("{0}", weekDays[day]);
+ else
+ Console.WriteLine("Tokios savaitės dienos pas mus nebūna.");
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.If.Step1/Introduction.If.Step1.csproj b/Introduction/Introduction.If.Step1/Introduction.If.Step1.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.If.Step1/Introduction.If.Step1.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.If.Step1/Program.cs b/Introduction/Introduction.If.Step1/Program.cs
new file mode 100644
index 0000000..acc65e8
--- /dev/null
+++ b/Introduction/Introduction.If.Step1/Program.cs
@@ -0,0 +1,19 @@
+using System;
+
+namespace Introduction.If.Step1
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ for (int i = 1; i < 51; i++)
+ {
+ Console.Write('*');
+ if (i % 5 == 0)
+ Console.WriteLine("");
+ }
+ Console.WriteLine("");
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.If.Step2/Introduction.If.Step2.csproj b/Introduction/Introduction.If.Step2/Introduction.If.Step2.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.If.Step2/Introduction.If.Step2.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.If.Step2/Program.cs b/Introduction/Introduction.If.Step2/Program.cs
new file mode 100644
index 0000000..a6cf2c0
--- /dev/null
+++ b/Introduction/Introduction.If.Step2/Program.cs
@@ -0,0 +1,21 @@
+using System;
+
+namespace Introduction.If.Step2
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ char character;
+ Console.WriteLine("Įveskite spausdinamą simbolį");
+ character = (char)Console.Read();
+ for (int i = 1; i < 51; i++)
+ if (i % 5 == 0)
+ Console.WriteLine(character);
+ else
+ Console.Write(character);
+ Console.WriteLine("");
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.If.Step3/Introduction.If.Step3.csproj b/Introduction/Introduction.If.Step3/Introduction.If.Step3.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.If.Step3/Introduction.If.Step3.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.If.Step3/Program.cs b/Introduction/Introduction.If.Step3/Program.cs
new file mode 100644
index 0000000..85dbbc6
--- /dev/null
+++ b/Introduction/Introduction.If.Step3/Program.cs
@@ -0,0 +1,25 @@
+using System;
+
+namespace Introduction.If.Step3
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Įveskite plotį: ");
+ int width = int.Parse(Console.ReadLine());
+ Console.WriteLine("Įveskite aukštį: ");
+ int height = int.Parse(Console.ReadLine());
+ char character;
+ Console.WriteLine("Įveskite spausdinamą simbolį: ");
+ character = (char)Console.Read();
+ for (int i = 1; i <= width * height; i++)
+ if (i % width == 0)
+ Console.WriteLine(character);
+ else
+ Console.Write(character);
+ Console.WriteLine("");
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Loop.Step1/Introduction.Loop.Step1.csproj b/Introduction/Introduction.Loop.Step1/Introduction.Loop.Step1.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step1/Introduction.Loop.Step1.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.Loop.Step1/Program.cs b/Introduction/Introduction.Loop.Step1/Program.cs
new file mode 100644
index 0000000..e180992
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step1/Program.cs
@@ -0,0 +1,15 @@
+using System;
+
+namespace Introduction.Loop.Step1
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Skaičiai nuo 1 iki 10 ir jų kvadratai:");
+ for (int i = 1; i < 11; i++)
+ Console.WriteLine("{0} {1}", i, i * i);
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Loop.Step2/Introduction.Loop.Step2.csproj b/Introduction/Introduction.Loop.Step2/Introduction.Loop.Step2.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step2/Introduction.Loop.Step2.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.Loop.Step2/Program.cs b/Introduction/Introduction.Loop.Step2/Program.cs
new file mode 100644
index 0000000..65366b5
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step2/Program.cs
@@ -0,0 +1,15 @@
+using System;
+
+namespace Introduction.Loop.Step2
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Skaičiai nuo 5 iki 15 ir jų kvadratai:");
+ for (int i = 5; i <= 15; i++)
+ Console.WriteLine("{0} {1}", i, i * i);
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Loop.Step3/Introduction.Loop.Step3.csproj b/Introduction/Introduction.Loop.Step3/Introduction.Loop.Step3.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step3/Introduction.Loop.Step3.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.Loop.Step3/Program.cs b/Introduction/Introduction.Loop.Step3/Program.cs
new file mode 100644
index 0000000..be7ae1b
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step3/Program.cs
@@ -0,0 +1,15 @@
+using System;
+
+namespace Introduction.Loop.Step3
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Skaičiai nuo 5 iki 15 ir jų kvadratai ir kūbai:");
+ for (int i = 5; i <= 15; i++)
+ Console.WriteLine("{0} {1} {2}", i, i * i, i * i * i);
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Loop.Step4/Introduction.Loop.Step4.csproj b/Introduction/Introduction.Loop.Step4/Introduction.Loop.Step4.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step4/Introduction.Loop.Step4.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.Loop.Step4/Program.cs b/Introduction/Introduction.Loop.Step4/Program.cs
new file mode 100644
index 0000000..2f73632
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step4/Program.cs
@@ -0,0 +1,17 @@
+using System;
+
+namespace Introduction.Loop.Step4
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ int from = 5;
+ int to = 15;
+ Console.WriteLine("Skaičiai nuo {0} iki {1} ir jų kvadratai ir kūbai:", from, to);
+ for (int i = from; i <= to; i++)
+ Console.WriteLine("{0} {1} {2}", i, i * i, i * i * i);
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Loop.Step5/Introduction.Loop.Step5.csproj b/Introduction/Introduction.Loop.Step5/Introduction.Loop.Step5.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step5/Introduction.Loop.Step5.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.Loop.Step5/Program.cs b/Introduction/Introduction.Loop.Step5/Program.cs
new file mode 100644
index 0000000..8c5d724
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step5/Program.cs
@@ -0,0 +1,20 @@
+using System;
+
+namespace Introduction.Loop.Step5
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ int from = 5;
+ int to = 15;
+ Console.WriteLine("Skaičiai nuo {0} iki {1} ir jų kvadratai ir kūbai:", from, to);
+ for (int i = from; i <= to; i++)
+ Console.WriteLine("{0} {1} {2}", i, i * i, i * i * i);
+
+ // Determine how many times the for loop got executed
+ Console.WriteLine("Skaičiavimų kiekis: {0}", to-from+1);
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Loop.Step6/Introduction.Loop.Step6.csproj b/Introduction/Introduction.Loop.Step6/Introduction.Loop.Step6.csproj
new file mode 100644
index 0000000..23df604
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step6/Introduction.Loop.Step6.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ netcoreapp2.1
+
+
+
diff --git a/Introduction/Introduction.Loop.Step6/Program.cs b/Introduction/Introduction.Loop.Step6/Program.cs
new file mode 100644
index 0000000..fc5c46e
--- /dev/null
+++ b/Introduction/Introduction.Loop.Step6/Program.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace Introduction.Loop.Step6
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Console.WriteLine("Įveskite nuo kurio skaičiaus skaičiuoti: ");
+ int from = int.Parse(Console.ReadLine());
+ Console.WriteLine("Įveskite iki kurio skaičiaus skaičiuoti: ");
+ int to = int.Parse(Console.ReadLine());
+
+ Console.WriteLine("Skaičiai nuo {0} iki {1} ir jų kvadratai ir kūbai:", from, to);
+ for (int i = from; i <= to; i++)
+ Console.WriteLine("{0} {1} {2}", i, i * i, i * i * i);
+
+ // Determine how many times the for loop got executed
+ Console.WriteLine("Skaičiavimų kiekis: {0}", to - from + 1);
+ Console.ReadKey();
+ }
+ }
+}
\ No newline at end of file
diff --git a/Introduction/Introduction.Methods.Step1/Introduction.Methods.Step1.csproj b/Introduction/Introduction.Methods.Step1/Introduction.Methods.Step1.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.Methods.Step1/Introduction.Methods.Step1.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.Methods.Step1/Program.cs b/Introduction/Introduction.Methods.Step1/Program.cs
new file mode 100644
index 0000000..c5f08ae
--- /dev/null
+++ b/Introduction/Introduction.Methods.Step1/Program.cs
@@ -0,0 +1,27 @@
+using System;
+
+namespace Introduction.Methods.Step1
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ char character;
+ Console.WriteLine("Įveskite spausdinamą simbolį");
+ character = Convert.ToChar(Console.Read());
+ Program program = new Program();
+ program.Display(character);
+ Console.ReadKey();
+ }
+
+ void Display(char characterToDisplay)
+ {
+ for (int i = 1; i < 51; i++)
+ if (i % 5 == 0)
+ Console.WriteLine(characterToDisplay);
+ else
+ Console.Write(characterToDisplay);
+ Console.WriteLine("");
+ }
+ }
+}
diff --git a/Introduction/Introduction.Methods.Step2/Introduction.Methods.Step2.csproj b/Introduction/Introduction.Methods.Step2/Introduction.Methods.Step2.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.Methods.Step2/Introduction.Methods.Step2.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.Methods.Step2/Program.cs b/Introduction/Introduction.Methods.Step2/Program.cs
new file mode 100644
index 0000000..e62a1c6
--- /dev/null
+++ b/Introduction/Introduction.Methods.Step2/Program.cs
@@ -0,0 +1,35 @@
+using System;
+
+namespace Introduction.Methods.Step2
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ double functionResult;
+ int a;
+ double x;
+ Console.WriteLine("Įveskite a reikšmę:");
+ a = int.Parse(Console.ReadLine());
+ Console.WriteLine("Įveskite x reikšmę:");
+ x = double.Parse(Console.ReadLine());
+ Program program = new Program();
+ functionResult = program.CalculateValue(a, x);
+ Console.WriteLine(" Reikšmė a = {0}, reikšmė x = {1}, fx = {2}", a, x,
+ functionResult);
+ Console.ReadKey();
+ }
+
+ double CalculateValue(int a, double x)
+ {
+ double value;
+ if (x <= 0)
+ value = a * Math.Exp(-x);
+ else if (x < 1)
+ value = 5 * a * x - 7;
+ else
+ value = Math.Pow(x + 1, 0.5);
+ return value;
+ }
+ }
+}
diff --git a/Introduction/Introduction.Methods.Step3/Introduction.Methods.Step3.csproj b/Introduction/Introduction.Methods.Step3/Introduction.Methods.Step3.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.Methods.Step3/Introduction.Methods.Step3.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.Methods.Step3/Program.cs b/Introduction/Introduction.Methods.Step3/Program.cs
new file mode 100644
index 0000000..115a674
--- /dev/null
+++ b/Introduction/Introduction.Methods.Step3/Program.cs
@@ -0,0 +1,27 @@
+using System;
+
+namespace Introduction.Methods.Step3
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ int z;
+ Console.WriteLine("Įveskite z reikšmę:");
+ z = int.Parse(Console.ReadLine());
+ Program program = new Program();
+ if (z - 1 >= 0)
+ {
+ Console.WriteLine("z={0} f(x)={1}", z, program.RaisePower(z, 1, 0.5));
+ }
+ else
+ Console.WriteLine("z={0} f-ja neegzistuoja", z);
+ Console.ReadKey();
+ }
+
+ double RaisePower(int value1, int value2, double power)
+ {
+ return Math.Pow(value1 - value2, power);
+ }
+ }
+}
diff --git a/Introduction/Introduction.MoreMath/Introduction.MoreMath.csproj b/Introduction/Introduction.MoreMath/Introduction.MoreMath.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.MoreMath/Introduction.MoreMath.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.MoreMath/Program.cs b/Introduction/Introduction.MoreMath/Program.cs
new file mode 100644
index 0000000..5198dff
--- /dev/null
+++ b/Introduction/Introduction.MoreMath/Program.cs
@@ -0,0 +1,27 @@
+using System;
+
+namespace Introduction.MoreMath
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ double functionResult;
+ int a;
+ double x;
+ Console.WriteLine("Įveskite a reikšmę:");
+ a = int.Parse(Console.ReadLine());
+ Console.WriteLine("Įveskite x reikšmę:");
+ x = double.Parse(Console.ReadLine());
+ if (x <= 0)
+ functionResult = a * Math.Exp(-x);
+ else
+ if (x < 1)
+ functionResult = 5 * a * x - 7;
+ else
+ functionResult = Math.Pow(x + 1, 0.5);
+ Console.WriteLine(" Reikšmė a = {0}, reikšmė x = {1}, fx = {2}", a, x, functionResult);
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.SimpleMath/Introduction.SimpleMath.csproj b/Introduction/Introduction.SimpleMath/Introduction.SimpleMath.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/Introduction/Introduction.SimpleMath/Introduction.SimpleMath.csproj
@@ -0,0 +1,8 @@
+
+
+
+ Exe
+ net5.0
+
+
+
diff --git a/Introduction/Introduction.SimpleMath/Program.cs b/Introduction/Introduction.SimpleMath/Program.cs
new file mode 100644
index 0000000..d6ce68b
--- /dev/null
+++ b/Introduction/Introduction.SimpleMath/Program.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace Introduction.SimpleMath
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ double squareRootResult;
+ int z;
+ Console.WriteLine("Įveskite z reikšmę:");
+ z = int.Parse(Console.ReadLine());
+ if (z - 1 >= 0)
+ {
+ squareRootResult = Math.Pow(z - 1, 0.5);
+ Console.WriteLine(" z = {0} f(x) = {1}", z, squareRootResult);
+ }
+ else
+ Console.WriteLine(" z = {0} f-ja neegzistuoja", z);
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/Introduction/Introduction.sln b/Introduction/Introduction.sln
new file mode 100644
index 0000000..76a25cb
--- /dev/null
+++ b/Introduction/Introduction.sln
@@ -0,0 +1,163 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.1525
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.Loop.Step1", "Introduction.Loop.Step1\Introduction.Loop.Step1.csproj", "{AC4A13B8-A882-4A86-A45E-723AB1C2CC71}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.Loop.Step2", "Introduction.Loop.Step2\Introduction.Loop.Step2.csproj", "{4D93DD53-0D88-4394-B47B-69E69D627973}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.Loop.Step3", "Introduction.Loop.Step3\Introduction.Loop.Step3.csproj", "{102E8A8C-2537-438C-A791-975D6C7E66BE}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.Loop.Step4", "Introduction.Loop.Step4\Introduction.Loop.Step4.csproj", "{D87DF8AE-ACE9-4E38-93BC-11933D572BB1}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.Loop.Step5", "Introduction.Loop.Step5\Introduction.Loop.Step5.csproj", "{F18DA94E-C56D-4DD9-9FC5-44E27007AD10}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.Loop.Step6", "Introduction.Loop.Step6\Introduction.Loop.Step6.csproj", "{818F9EFF-0161-4221-A117-8ED9D38CF319}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.If.Step1", "Introduction.If.Step1\Introduction.If.Step1.csproj", "{71267E24-7AC6-42BB-921F-4361E2640B62}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.If.Step2", "Introduction.If.Step2\Introduction.If.Step2.csproj", "{92E5585B-6760-4A1C-8493-5D966C8CF7B2}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.If.Step3", "Introduction.If.Step3\Introduction.If.Step3.csproj", "{29EEE229-7D54-4F99-8635-6331A17023FB}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.1Savarankiskas", "Introduction.1Savarankiskas\Introduction.1Savarankiskas.csproj", "{80F746C3-BEE6-49C2-A718-DAEFF7B45C61}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.SimpleMath", "Introduction.SimpleMath\Introduction.SimpleMath.csproj", "{EC839DEE-CAFE-42E1-93AC-B737840A44DB}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.MoreMath", "Introduction.MoreMath\Introduction.MoreMath.csproj", "{0E9722E5-1532-48A8-86A0-566F03E8012C}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Introduction.3Savarankiskas", "Introduction.3Savarankiskas\Introduction.3Savarankiskas.csproj", "{0BBBAED0-9905-4629-BA5A-F2EB629AF610}"
+EndProject
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+EndProject
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diff --git a/Introduction/README.md b/Introduction/README.md
new file mode 100644
index 0000000..a1c6b40
--- /dev/null
+++ b/Introduction/README.md
@@ -0,0 +1,6 @@
+# Introduction example project
+
+This project is from the "Object oriented programming" course in KTU.
+
+It is not polished in any way, so don't expect anything from this.
+
diff --git a/Introduction/global.json b/Introduction/global.json
new file mode 100644
index 0000000..4aa91ae
--- /dev/null
+++ b/Introduction/global.json
@@ -0,0 +1,5 @@
+{
+ "sdk": {
+ "version": "3.0.103"
+ }
+}