anemicmoth's MathGame

MathGame.anemicmoth/MathGame2.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>

MathGame.anemicmoth/Program.cs

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+// Difficulty based questions
+
+string[,] beginnerQuestions = {{"1 + 5", "6"}, {"2 * 2", "4"}, {"21 + 3", "24"}};
+string[,] moderateQuestions = {{"22/3", "7"}, {"17 * 2", "34"}, {"125 - 56", "69"}};
+string[,] advancedQuestions = {{"147/6", "24"}, {"13 ^ 2", "169"}, {"23 * 25", "575"}};
+
+string entry = "";
+
+
+while (entry != "exit")
+{
+    Console.WriteLine("Please enter a difficulty: b (beginner), m (moderate), a (advanced)");
+    entry = Console.ReadLine();
+    switch (entry)
+    {
+        case "b":
+            askQuestion(Difficulty.Beginner);
+            break;
+        case "m":
+            askQuestion(Difficulty.Moderate);
+            break;
+        case "a":
+            askQuestion(Difficulty.Advanced);
+            break;
+        default:
+            Console.WriteLine("Invalid input.");
+            break;
+    }
+    Console.WriteLine("Do you want to play again? Press Enter to continue or type \"exit\" to quit.");
+    entry = Console.ReadLine();
+}
+
+void askQuestion(Difficulty difficulty)
+{
+    System.Diagnostics.Stopwatch timer = new System.Diagnostics.Stopwatch();
+    Tuple<string, string> question = createQuestion(difficulty);
+
+    timer.Start();
+    Console.WriteLine(question.Item1);
+    entry = Console.ReadLine();
+    timer.Stop();
+
+    TimeSpan ts = timer.Elapsed;
+    string elapsedTime = String.Format("{0:00}:{1:00}", ts.Minutes, ts.Seconds);
+    if (entry != null && entry.Equals(question.Item2))
+    {
+        Console.WriteLine($"Correct! Your time to answer is: {elapsedTime} min");
+    }
+    else
+    {
+        Console.WriteLine($"That was the wrong answer. The correct answer is: {question.Item2}");
+    }
+}
+
+Tuple<String, String> createQuestion(Difficulty difficulty)
+{
+    Random rand = new Random();
+    int num1 = rand.Next(1, 51);
+    int num2 = rand.Next(1, 51);
+    int operand = 0;
+    int result;
+
+    switch (difficulty)
+    {
+        case Difficulty.Beginner:
+            operand = rand.Next(0, 2);
+            break;
+        case Difficulty.Moderate:
+            operand = rand.Next(0, 4);
+            break;
+        case Difficulty.Advanced:
+            num1 = rand.Next(51, 201);
+            num2 = rand.Next(51, 201);
+            operand = rand.Next(2, 5);
+            if (operand == 4)
+            {
+                num1 = rand.Next(1, 51);
+                num2 = rand.Next(1, 5);
+            }
+            break;
+    }
+
+    switch (operand)
+    {
+        case 0:
+            result = num1 + num2;
+            return new Tuple<string, string>(num1 + " + " + num2, Convert.ToString(result));
+        case 1:
+            result = num1 - num2;
+            return new Tuple<string, string>(num1 + " - " + num2, Convert.ToString(result));
+        case 2:
+            result = num1 * num2;
+            return new Tuple<string, string>(num1 + " * " + num2, Convert.ToString(result));
+        case 3:
+            result = num1 / num2;
+            return new Tuple<string, string>(num1 + " / " + num2, Convert.ToString(result));
+        case 4:
+            result = Convert.ToInt32(Math.Pow(num1, num2));
+            return new Tuple<string, string>(num1 + " ^ " + num2, Convert.ToString(result));
+    }
+
+    return null;
+}
+
+enum Difficulty
+{
+    Beginner,
+    Moderate,
+    Advanced
+}