begin adding csharp project code

2-csharp/1-projects/challenge-project/ChallengeProject/Final/Final.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

2-csharp/1-projects/challenge-project/ChallengeProject/Final/Program.cs

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+/* 
+This C# console application is designed to:
+- Use arrays to store student names and assignment scores.
+- Use a `foreach` statement to iterate through the student names as an outer program loop.
+- Use an `if` statement within the outer loop to identify the current student name and access that student's assignment scores.
+- Use a `foreach` statement within the outer loop to iterate though the assignment scores array and sum the values.
+- Use an algorithm within the outer loop to calculate the average exam score for each student.
+- Use an `if-elseif-else` construct within the outer loop to evaluate the average exam score and assign a letter grade automatically.
+- Integrate extra credit scores when calculating the student's final score and letter grade as follows:
+    - detects extra credit assignments based on the number of elements in the student's scores array.
+    - divides the values of extra credit assignments by 10 before adding extra credit scores to the sum of exam scores.
+- use the following report format to report student grades: 
+
+Student         Exam Score      Overall Grade   Extra Credit
+
+Sophia          92.2            95.88   A       92 (3.68 pts)
+
+*/
+int examAssignments = 5;
+
+string[] studentNames = new string[] { "Sophia", "Andrew", "Emma", "Logan" };
+
+int[] sophiaScores = new int[] { 90, 86, 87, 98, 100, 94, 90 };
+int[] andrewScores = new int[] { 92, 89, 81, 96, 90, 89 };
+int[] emmaScores = new int[] { 90, 85, 87, 98, 68, 89, 89, 89 };
+int[] loganScores = new int[] { 90, 95, 87, 88, 96, 96 };
+
+int[] studentScores = new int[10];
+
+string currentStudentLetterGrade = "";
+
+// display the header row for scores/grades
+Console.Clear();
+Console.WriteLine("Student\t\tExam Score\tOverall Grade\tExtra Credit\n");
+
+/*
+The outer foreach loop is used to:
+- iterate through student names 
+- assign a student's grades to the studentScores array
+- calculate exam and extra credit sums (inner foreach loop)
+- calculate numeric and letter grade
+- write the score report information
+*/
+foreach (string name in studentNames)
+{
+    string currentStudent = name;
+
+    if (currentStudent == "Sophia")
+        studentScores = sophiaScores;
+
+    else if (currentStudent == "Andrew")
+        studentScores = andrewScores;
+
+    else if (currentStudent == "Emma")
+        studentScores = emmaScores;
+
+    else if (currentStudent == "Logan")
+        studentScores = loganScores;
+
+    int gradedAssignments = 0;
+    int gradedExtraCreditAssignments = 0;
+
+    int sumExamScores = 0;
+    int sumExtraCreditScores = 0;
+
+    decimal currentStudentGrade = 0;
+    decimal currentStudentExamScore = 0;
+    decimal currentStudentExtraCreditScore = 0;
+
+    /* 
+    the inner foreach loop: 
+    - sums the exam and extra credit scores
+    - counts the extra credit assignments
+    */
+    foreach (int score in studentScores)
+    {
+        gradedAssignments += 1;
+
+        if (gradedAssignments <= examAssignments)
+        {
+            sumExamScores = sumExamScores + score;
+        }
+
+        else
+        {
+            gradedExtraCreditAssignments += 1;
+            sumExtraCreditScores += score;
+        }
+    }
+
+    currentStudentExamScore = (decimal)(sumExamScores) / examAssignments;
+    currentStudentExtraCreditScore = (decimal)(sumExtraCreditScores) / gradedExtraCreditAssignments;
+
+    currentStudentGrade = (decimal)((decimal)sumExamScores + ((decimal)sumExtraCreditScores / 10)) / examAssignments;
+
+    if (currentStudentGrade >= 97)
+        currentStudentLetterGrade = "A+";
+
+    else if (currentStudentGrade >= 93)
+        currentStudentLetterGrade = "A";
+
+    else if (currentStudentGrade >= 90)
+        currentStudentLetterGrade = "A-";
+
+    else if (currentStudentGrade >= 87)
+        currentStudentLetterGrade = "B+";
+
+    else if (currentStudentGrade >= 83)
+        currentStudentLetterGrade = "B";
+
+    else if (currentStudentGrade >= 80)
+        currentStudentLetterGrade = "B-";
+
+    else if (currentStudentGrade >= 77)
+        currentStudentLetterGrade = "C+";
+
+    else if (currentStudentGrade >= 73)
+        currentStudentLetterGrade = "C";
+
+    else if (currentStudentGrade >= 70)
+        currentStudentLetterGrade = "C-";
+
+    else if (currentStudentGrade >= 67)
+        currentStudentLetterGrade = "D+";
+
+    else if (currentStudentGrade >= 63)
+        currentStudentLetterGrade = "D";
+
+    else if (currentStudentGrade >= 60)
+        currentStudentLetterGrade = "D-";
+
+    else
+        currentStudentLetterGrade = "F";
+
+
+    // Student         Exam Score      Overall Grade   Extra Credit
+    // Sophia          92.2            95.88   A       92 (3.68 pts)
+
+    Console.WriteLine($"{currentStudent}\t\t{currentStudentExamScore}\t\t{currentStudentGrade}\t{currentStudentLetterGrade}\t{currentStudentExtraCreditScore} ({(((decimal)sumExtraCreditScores / 10) / examAssignments)} pts)");
+}
+
+// required for running in VS Code (keeps the Output windows open to view results)
+Console.WriteLine("\n\rPress the Enter key to continue");
+Console.ReadLine();

2-csharp/1-projects/challenge-project/ChallengeProject/Starter/Program.cs

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+/* 
+This C# console application is designed to:
+- Use arrays to store student names and assignment scores.
+- Use a `foreach` statement to iterate through the student names as an outer program loop.
+- Use an `if` statement within the outer loop to identify the current student name and access that student's assignment scores.
+- Use a `foreach` statement within the outer loop to iterate though the assignment scores array and sum the values.
+- Use an algorithm within the outer loop to calculate the average exam score for each student.
+- Use an `if-elseif-else` construct within the outer loop to evaluate the average exam score and assign a letter grade automatically.
+- Integrate extra credit scores when calculating the student's final score and letter grade as follows:
+    - detects extra credit assignments based on the number of elements in the student's scores array.
+    - divides the values of extra credit assignments by 10 before adding extra credit scores to the sum of exam scores.
+- use the following report format to report student grades: 
+
+    Student         Grade
+
+    Sophia:         92.2    A-
+    Andrew:         89.6    B+
+    Emma:           85.6    B
+    Logan:          91.2    A-
+*/
+int examAssignments = 5;
+
+string[] studentNames = new string[] { "Sophia", "Andrew", "Emma", "Logan" };
+
+int[] sophiaScores = new int[] { 90, 86, 87, 98, 100, 94, 90 };
+int[] andrewScores = new int[] { 92, 89, 81, 96, 90, 89 };
+int[] emmaScores = new int[] { 90, 85, 87, 98, 68, 89, 89, 89 };
+int[] loganScores = new int[] { 90, 95, 87, 88, 96, 96 };
+
+int[] studentScores = new int[10];
+
+string currentStudentLetterGrade = "";
+
+// display the header row for scores/grades
+Console.Clear();
+Console.WriteLine("Student\t\tGrade\tLetter Grade\n");
+
+/*
+The outer foreach loop is used to:
+- iterate through student names 
+- assign a student's grades to the studentScores array
+- sum assignment scores (inner foreach loop)
+- calculate numeric and letter grade
+- write the score report information
+*/
+foreach (string name in studentNames)
+{
+    string currentStudent = name;
+
+    if (currentStudent == "Sophia")
+        studentScores = sophiaScores;
+
+    else if (currentStudent == "Andrew")
+        studentScores = andrewScores;
+
+    else if (currentStudent == "Emma")
+        studentScores = emmaScores;
+
+    else if (currentStudent == "Logan")
+        studentScores = loganScores;
+
+    int sumAssignmentScores = 0;
+
+    decimal currentStudentGrade = 0;
+
+    int gradedAssignments = 0;
+
+    /* 
+    the inner foreach loop sums assignment scores
+    extra credit assignments are worth 10% of an exam score
+    */
+    foreach (int score in studentScores)
+    {
+        gradedAssignments += 1;
+
+        if (gradedAssignments <= examAssignments)
+            sumAssignmentScores += score;
+
+        else
+            sumAssignmentScores += score / 10;
+    }
+
+    currentStudentGrade = (decimal)(sumAssignmentScores) / examAssignments;
+
+    if (currentStudentGrade >= 97)
+        currentStudentLetterGrade = "A+";
+
+    else if (currentStudentGrade >= 93)
+        currentStudentLetterGrade = "A";
+
+    else if (currentStudentGrade >= 90)
+        currentStudentLetterGrade = "A-";
+
+    else if (currentStudentGrade >= 87)
+        currentStudentLetterGrade = "B+";
+
+    else if (currentStudentGrade >= 83)
+        currentStudentLetterGrade = "B";
+
+    else if (currentStudentGrade >= 80)
+        currentStudentLetterGrade = "B-";
+
+    else if (currentStudentGrade >= 77)
+        currentStudentLetterGrade = "C+";
+
+    else if (currentStudentGrade >= 73)
+        currentStudentLetterGrade = "C";
+
+    else if (currentStudentGrade >= 70)
+        currentStudentLetterGrade = "C-";
+
+    else if (currentStudentGrade >= 67)
+        currentStudentLetterGrade = "D+";
+
+    else if (currentStudentGrade >= 63)
+        currentStudentLetterGrade = "D";
+
+    else if (currentStudentGrade >= 60)
+        currentStudentLetterGrade = "D-";
+
+    else
+        currentStudentLetterGrade = "F";
+
+    // Student         Grade
+    // Sophia:         92.2    A-
+    
+    Console.WriteLine($"{currentStudent}\t\t{currentStudentGrade}\t{currentStudentLetterGrade}");
+}
+
+// required for running in VS Code (keeps the Output windows open to view results)
+Console.WriteLine("\n\rPress the Enter key to continue");
+Console.ReadLine();

2-csharp/1-projects/challenge-project/ChallengeProject/Starter/Starter.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

2-csharp/1-projects/challenge-project/LICENSE

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+MIT License
+
+Copyright (c) 2023 Microsoft Learning
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

2-csharp/1-projects/challenge-project/README.md

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+# Challenge-project-foreach-if-array-CSharp
+Starter and Solution code for the Challenge project: "Develop foreach and if-elseif-else structures to process array data in C#" from the Microsoft Learn collection "Getting started with C#"

2-csharp/1-projects/guided-project/Final/Final.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

2-csharp/1-projects/guided-project/Final/Program.cs

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+/* 
+This C# console application is designed to:
+- Use arrays to store student names and assignment scores.
+- Use a `foreach` statement to iterate through the student names as an outer program loop.
+- Use an `if` statement within the outer loop to identify the current student name and access that student's assignment scores.
+- Use a `foreach` statement within the outer loop to iterate though the assignment scores array and sum the values.
+- Use an algorithm within the outer loop to calculate the average exam score for each student.
+- Use an `if-elseif-else` construct within the outer loop to evaluate the average exam score and assign a letter grade automatically.
+- Integrate extra credit scores when calculating the student's final score and letter grade as follows:
+    - detects extra credit assignments based on the number of elements in the student's scores array.
+    - divides the values of extra credit assignments by 10 before adding extra credit scores to the sum of exam scores.
+- use the following report format to report student grades: 
+
+    Student         Grade
+
+    Sophia:         92.2    A-
+    Andrew:         89.6    B+
+    Emma:           85.6    B
+    Logan:          91.2    A-
+*/
+
+int examAssignments = 5;
+
+string[] studentNames = new string[] { "Sophia", "Andrew", "Emma", "Logan" };
+
+int[] sophiaScores = new int[] { 90, 86, 87, 98, 100, 94, 90 };
+int[] andrewScores = new int[] { 92, 89, 81, 96, 90, 89 };
+int[] emmaScores = new int[] { 90, 85, 87, 98, 68, 89, 89, 89 };
+int[] loganScores = new int[] { 90, 95, 87, 88, 96, 96 };
+
+int[] studentScores = new int[10];
+
+string currentStudentLetterGrade = "";
+
+// display the header row for scores/grades
+Console.Clear();
+Console.WriteLine("Student\t\tGrade\n");
+
+/*
+The outer foreach loop is used to:
+- iterate through student names 
+- assign a student's grades to the studentScores array
+- sum assignment scores (inner foreach loop)
+- calculate numeric and letter grade
+- write the score report information
+*/
+foreach (string name in studentNames)
+{
+    string currentStudent = name;
+
+    if (currentStudent == "Sophia")
+        studentScores = sophiaScores;
+
+    else if (currentStudent == "Andrew")
+        studentScores = andrewScores;
+
+    else if (currentStudent == "Emma")
+        studentScores = emmaScores;
+
+    else if (currentStudent == "Logan")
+        studentScores = loganScores;
+
+    int sumAssignmentScores = 0;
+    decimal currentStudentGrade = 0;
+    int gradedAssignments = 0;
+
+    /* 
+    the inner foreach loop sums assignment scores
+    extra credit assignments are worth 10% of an exam score
+    */
+    foreach (int score in studentScores)
+    {
+        gradedAssignments += 1;
+
+        if (gradedAssignments <= examAssignments)
+            sumAssignmentScores += score;
+        else
+            sumAssignmentScores += score / 10;
+    }
+
+    currentStudentGrade = (decimal)(sumAssignmentScores) / examAssignments;
+
+    if (currentStudentGrade >= 97)
+        currentStudentLetterGrade = "A+";
+    else if (currentStudentGrade >= 93)
+        currentStudentLetterGrade = "A";
+    else if (currentStudentGrade >= 90)
+        currentStudentLetterGrade = "A-";
+    else if (currentStudentGrade >= 87)
+        currentStudentLetterGrade = "B+";
+    else if (currentStudentGrade >= 83)
+        currentStudentLetterGrade = "B";
+    else if (currentStudentGrade >= 80)
+        currentStudentLetterGrade = "B-";
+    else if (currentStudentGrade >= 77)
+        currentStudentLetterGrade = "C+";
+    else if (currentStudentGrade >= 73)
+        currentStudentLetterGrade = "C";
+    else if (currentStudentGrade >= 70)
+        currentStudentLetterGrade = "C-";
+    else if (currentStudentGrade >= 67)
+        currentStudentLetterGrade = "D+";
+    else if (currentStudentGrade >= 63)
+        currentStudentLetterGrade = "D";
+    else if (currentStudentGrade >= 60)
+        currentStudentLetterGrade = "D-";
+    else
+        currentStudentLetterGrade = "F";
+
+    // Student         Grade
+    // Sophia:         92.2    A-
+    
+    Console.WriteLine($"{currentStudent}\t\t{currentStudentGrade}\t{currentStudentLetterGrade}");
+}
+
+// required for running in VS Code (keeps the Output windows open to view results)
+Console.WriteLine("\n\rPress the Enter key to continue");
+Console.ReadLine();

2-csharp/1-projects/guided-project/Starter/Program.cs

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+using System;
+
+// initialize variables - graded assignments 
+int currentAssignments = 5;
+
+int sophia1 = 90;
+int sophia2 = 86;
+int sophia3 = 87;
+int sophia4 = 98;
+int sophia5 = 100;
+
+int andrew1 = 92;
+int andrew2 = 89;
+int andrew3 = 81;
+int andrew4 = 96;
+int andrew5 = 90;
+
+int emma1 = 90;
+int emma2 = 85;
+int emma3 = 87;
+int emma4 = 98;
+int emma5 = 68;
+
+int logan1 = 90;
+int logan2 = 95;
+int logan3 = 87;
+int logan4 = 88;
+int logan5 = 96;
+
+int sophiaSum = 0;
+int andrewSum = 0;
+int emmaSum = 0;
+int loganSum = 0;
+
+decimal sophiaScore;
+decimal andrewScore;
+decimal emmaScore;
+decimal loganScore;
+
+sophiaSum = sophia1 + sophia2 + sophia3 + sophia4 + sophia5;
+andrewSum = andrew1 + andrew2 + andrew3 + andrew4 + andrew5;
+emmaSum = emma1 + emma2 + emma3 + emma4 + emma5;
+loganSum = logan1 + logan2 + logan3 + logan4 + logan5;
+
+sophiaScore = (decimal)sophiaSum / currentAssignments;
+andrewScore = (decimal)andrewSum / currentAssignments;
+emmaScore = (decimal)emmaSum / currentAssignments;
+loganScore = (decimal)loganSum / currentAssignments;
+
+Console.WriteLine("Student\t\tGrade\n");
+Console.WriteLine("Sophia:\t\t" + sophiaScore + "\tA-");
+Console.WriteLine("Andrew:\t\t" + andrewScore + "\tB+");
+Console.WriteLine("Emma:\t\t" + emmaScore + "\tB");
+Console.WriteLine("Logan:\t\t" + loganScore + "\tA-");
+
+Console.WriteLine("Press the Enter key to continue");
+Console.ReadLine();

2-csharp/1-projects/guided-project/Starter/Starter.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>