All tests passed, Elisabeth Røysland

Boolean.CSharp.Main/Core.cs

@@ -30,7 +30,7 @@ public Car(string Make)
                 }
             */
 
-            Car car = new Car("Volkswagen");
+            Car car = new Car("Volkswagen", "Golf");
             /*  When the car in instantiated, the constructor is passed a string
              in this case Volkswagen which is a Make of car is passed in.
              Within the constructor the 'string Make' variable has scope within the constructor and assiged to the _make member now visible to the whole class
@@ -92,7 +92,7 @@ public Bicycle Question3()
             //See there is somewhere to store the number of wheels the bike has 
             //but no constructor to set this
             //TODO: 3. Add a constructor to the Bicycle class that populates the _wheelCount variable
-            Bicycle bike = new Bicycle();
+            Bicycle bike = new Bicycle(2);
 
             return bike;
 
@@ -108,7 +108,7 @@ public Unicycle Question4()
 
             //TIP  see we already have an internal member for the unicyclist name:  _nameOfUnicyclist so you can use this to store the name internally
             //      it is good practice to name internal class variable with an _ at the beginning
-            Unicycle unicycle = new Unicycle();
+            Unicycle unicycle = new Unicycle("Elisabeth");
 
 
 
@@ -132,10 +132,12 @@ What are the parameters and types?
              */
             Aeroplane plane = new Aeroplane();            
             plane.FlightDetails("LHR", "JFK");
-            
+
             //TODO:  5.  Call the FlightDetails method that sets the cancelled message and  cancel the flight
-
-           //write code here 
+
+            //write code here 
+
+            plane.FlightDetails("The flight is cancelled");
 
             return plane;
         }

Boolean.CSharp.Main/Extension.cs

@@ -7,23 +7,72 @@
 namespace Boolean.CSharp.Main
 {
     public class Extension
-    {        
+    {
 
         //Implement the following methods:
 
         //TODO: 1. add, which accepts two floats and returns a float (both floats added together)
 
+        public float add(float a, float b)
+        {
+            return a + b;
+        }
+
         //TODO: 2. add, which accepts two doubles and returns a double (both doubles added together)
 
-        //TODO: 3. subtract, which accepts two floats and returns a float (first float minus second float)      
+        public double add(double a, double b)
+        {
+            return a + b;
+        }
+
+        //TODO: 3. subtract, which accepts two floats and returns a float (first float minus second float)
+
+        public float subtract(float a, float b)
+        {
+            return a - b;
+        }
 
-        //TODO: 4. subtract, which accepts a String and a char and returns a string with all instances of the provided char removed        
+        //TODO: 4. subtract, which accepts a String and a char and returns a string with all instances of the provided char removed
+
+        public string subtract(string source, char letter)
+        {
+            return source.Replace($"{letter}", "");
+        }
 
         //TODO: 5. multiply, which accepts two ints and returns an int (first int multiplied by second int)
 
+        public int multiply(int a, int b)
+        {
+            return a * b;
+        }
+
         //TODO: 6. multiply, which accepts a string and an int, and returns a string containing the provided string as many times as the provided int separated by a comma. E.g. multiply("Hello", 3) -> "Hello,Hello,Hello"
-
+
+        public string multiply(string word, int t)
+        {
+            string finalWord = word;
+
+            for (int i = 0; i < t-1; i++)
+            {
+                finalWord += "," + word;
+            }
+
+            return finalWord;
+        }
+
         //TODO: 7. multiply, which accepts an array of Strings that each contain a number, and an int. The method should return an array of ints that contain the value of multiplying each String number by the provided int E.g. multiply(["2", "7", "3"], 3) -> [6, 21, 9]
 
+        public int[] multiply(string[] numbers, int a)
+        {
+            int[] result = new int[numbers.Length];
+
+            for (int i = 0; i < numbers.Length; i++)
+            {
+                result[i] = Convert.ToInt32(numbers[i]) * a;
+            }
+
+            return result;
+        }
+
     }
 }

Boolean.CSharp.Main/Misc/Bicycle.cs

@@ -10,6 +10,11 @@ public class Bicycle
     {
         private int _wheelCount;
 
-        public int WheelCount { get; set; }
-    }
+        public Bicycle(int wheelCount)
+        {
+            _wheelCount = wheelCount;
+        }
+
+        public int WheelCount { get { return _wheelCount; } }
+    };
 }

Boolean.CSharp.Main/Misc/Car.cs

@@ -17,10 +17,10 @@ public Car()
             _model = string.Empty;
             _make = string.Empty;
         }
-        public Car(string Make)
+        public Car(string Make, string Model)
         {
             _make = Make;
-            _model = string.Empty;
+            _model = Model;
         }
 
         public string Make

Boolean.CSharp.Main/Misc/Motorbike.cs

@@ -24,6 +24,7 @@ public Motorbike(string Make, string Model)
         {
             _make = Make;
             _model = Model;
+            _cc = 373;
         }
 
         public string Make

Boolean.CSharp.Main/Misc/Unicycle.cs

@@ -10,6 +10,11 @@ public class Unicycle
     {
         private string _nameOfUnicyclist;
 
+        public Unicycle(string name)
+        {
+            _nameOfUnicyclist = name;   
+        }
+
         public string NameOfUnicyclist { get => _nameOfUnicyclist; set => _nameOfUnicyclist = value; }
         public int WheelCount { get; set; } = 1;
     }

Boolean.CSharp.Test/ExtensionTests.cs

@@ -11,8 +11,6 @@ namespace Boolean.CSharp.Test
     [TestFixture]
     public class ExtensionTests
     {
-
-
         [Test]
         public void TestQuestion1()
         {
@@ -28,6 +26,7 @@ public void TestQuestion1()
 
 
         }
+
         [Test]
         public void TestQuestion2()
         {
@@ -40,7 +39,7 @@ public void TestQuestion2()
 
             Assert.AreEqual(3.0, result);
         }
-
+        
         [Test]
         public void TestQuestion3()
         {
@@ -53,7 +52,7 @@ public void TestQuestion3()
 
             Assert.AreEqual(1.0f, result);
         }
-
+        
         [Test]
         public void TestQuestion4()
         {
@@ -66,7 +65,7 @@ public void TestQuestion4()
 
             Assert.IsTrue(result == "the quick brown fox jumps over the lay dog");
         }
-
+        
         [Test]
         public void TestQuestion5()
         {
@@ -79,6 +78,7 @@ public void TestQuestion5()
 
             Assert.AreEqual(10, result);
         }
+
         [Test]
         public void TestQuestion6()
         {
@@ -91,6 +91,7 @@ public void TestQuestion6()
 
             Assert.IsTrue("Hello,Hello,Hello" == result);
         }
+
         [Test]
         public void TestQuestion7()
         {
@@ -104,9 +105,6 @@ public void TestQuestion7()
             int[] answer = { 6, 21, 9 };
 
             Assert.IsTrue(result.SequenceEqual(answer));
-
-
         }
-
     }
 }