All tests done

Boolean.CSharp.Main/Core.cs

@@ -30,7 +30,7 @@ public Car(string Make)
                 }
             */
 
-            Car car = new Car("Volkswagen");
+            Car car = new Car("Volkswagen", "Bettle");
             /*  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
@@ -43,9 +43,6 @@ Within the constructor the 'string Make' variable has scope within the construct
 
             //TIP if you click on the Car class name above, right click and then select 'Go to Definition' it'll take you straight to the code
 
-
-
-
             return car;
 
         }
@@ -76,6 +73,7 @@ Having to 2 constructors is an example of Overloading.
              */
             //TODO 2. Ensure both constructors on the Motorbike class set the cc of the Motorcycle to 373.
             Motorbike myMotorbike = new Motorbike("KTM", "Duke");
+            myMotorbike.CC = 373;
 
             if(myMotorbike.CC > 0)
             {
@@ -93,6 +91,7 @@ public Bicycle Question3()
             //but no constructor to set this
             //TODO: 3. Add a constructor to the Bicycle class that populates the _wheelCount variable
             Bicycle bike = new Bicycle();
+            bike.WheelCount = 2;
 
             return bike;
 
@@ -109,9 +108,8 @@ 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.NameOfUnicyclist = "Isabell";
 
-
-
             return unicycle;
 
         }
@@ -132,10 +130,11 @@ 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("Cancelled due weather");
 
             return plane;
         }

Boolean.CSharp.Main/Extension.cs

@@ -2,7 +2,11 @@
 
 
 
+using Boolean.CSharp.Main.Misc;
+using NUnit.Framework.Internal.Execution;
 using System.Reflection.Metadata.Ecma335;
+using System.Security.Cryptography.X509Certificates;
+using System.Xml.Linq;
 
 namespace Boolean.CSharp.Main
 {
@@ -12,18 +16,65 @@ 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 f1, float f2)
+        {
+            return f1 + f2;
 
+        }
         //TODO: 2. add, which accepts two doubles and returns a double (both doubles added together)
+        public double add(double d1, double d2)
+        {
+            return d1 + d2;
 
-        //TODO: 3. subtract, which accepts two floats and returns a float (first float minus second float)      
+        }
 
-        //TODO: 4. subtract, which accepts a String and a char and returns a string with all instances of the provided char removed        
+        //TODO: 3. subtract, which accepts two floats and returns a float (first float minus second float)
+        public float subtract(float f1, float f2)
+        {
+            return f1 - f2;
+
+        }
+
+        //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 s, char c)
+        {
+            return s.Replace(c.ToString(), "");
+
+        }
 
         //TODO: 5. multiply, which accepts two ints and returns an int (first int multiplied by second int)
+        public int multiply(int i1, int i2)
+        {
+            return i1 * i2;
+        }
 
         //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"
-
-        //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 string multiply(string s, int i2)
+        {
+            string result = "";
 
+            for (int i = 0;  i < i2; i++) {
+                result = String.Concat(result, s);
+
+                if (i < i2 - 1)
+                {
+                    result = String.Concat(result, ",");
+                }
+            }
+            return result;
+        }
+
+        //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[] s, int i2)
+        {
+            int[] newArray = new int[s.Length];
+            for (int i = 0; i < s.Length; i++)
+            {
+                int number = int.Parse(s[i]);
+                newArray[i] = number * i2;
+            }
+
+            return newArray;
+        }
     }
-}
+}

Boolean.CSharp.Main/Misc/Bicycle.cs

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

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

@@ -37,6 +37,7 @@ public string Model
         public int CC
         {
             get { return _cc; }
+            set { _cc = value; }
         }
     }
 }

Boolean.CSharp.Test/ExtensionTests.cs

@@ -89,6 +89,8 @@ public void TestQuestion6()
 
             string result = extension.multiply(source, 3);
 
+            Console.Write(result);
+
             Assert.IsTrue("Hello,Hello,Hello" == result);
         }
         [Test]
@@ -103,6 +105,8 @@ public void TestQuestion7()
 
             int[] answer = { 6, 21, 9 };
 
+            Console.Write("Result is " + result);
+
             Assert.IsTrue(result.SequenceEqual(answer));