diff --git a/.gitignore b/.gitignore
index 4287ca8..94cfd5b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-#
\ No newline at end of file
+#Executables
+*.exe
\ No newline at end of file
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..e69de29
diff --git a/src/Problems/Problem.cs b/src/Problems/Problem.cs
new file mode 100644
index 0000000..590d58d
--- /dev/null
+++ b/src/Problems/Problem.cs
@@ -0,0 +1,38 @@
+//ProjectEuler/ProjectEulerCS/src/Problems/Problem.cs
+//Matthew Ellison
+// Created: 08-14-20
+//Modified: 08-14-20
+//This is the base class for the rest of the problems
+
+
+namespace mee{
+	public abstract class Problem{
+		//Variables
+		//Instance variables
+		//protected const Stopwatch timer = new Stopwatch();	//To time how long it takes to run the algorithm
+		protected string _result = null;	//Holds the results of the problem
+		public string result{
+			get{	return _result;		}
+		}
+		protected readonly string _description;	//Holds the description of the problem
+		public string description{
+			get{	return _description;	}
+		}
+		protected bool solved;	//Shows whether the problem has already been solved
+
+		//Constructor
+		public Problem(string description){
+			this._description = description;
+		}
+
+		//Operations functions
+		//Solve the problem
+		public abstract void solve();
+		//Reset the problem so it can be run again
+		public virtual void reset(){
+			//timer.reset();
+			solved = false;
+			_result = null;
+		}
+	}
+}
diff --git a/src/Problems/Problem1.cs b/src/Problems/Problem1.cs
new file mode 100644
index 0000000..7f65396
--- /dev/null
+++ b/src/Problems/Problem1.cs
@@ -0,0 +1,77 @@
+//ProjectEuler/ProjectEulerCS/src/Problems/Problem1.cs
+//Matthew Ellison
+// Created: 08-14-20
+//Modified: 08-14-20
+//What is the sum of all the multiples of 3 or 5 that are less than 1000
+/*
+	Copyright (C) 2020  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+
+namespace mee{
+	public class Problem1 : Problem{
+		//Variables
+		private const int TOP_NUM = 999;	//THe largest number to tbe checked
+		//Instance variables
+		private int fullSum;	//The sum of all the numbers
+		public int sum{
+			get{	return fullSum;	}
+		}
+
+		//Functions
+		//Constructor
+		public Problem1() : base("What is the sum of all the multiples of 3 or 5 that are less than 1000"){
+			fullSum = 0;
+		}
+		//Operational functions
+		//Solve the problem
+		public override void solve(){
+			//If the problem has already been solved do nothing and end the function
+			if(solved){
+				return;
+			}
+
+			//Start the timer
+			//timer.start();
+
+			//Check every number < 1000 to see if it is a multiple of 3 or 5. If it is add it to the running sum
+			for(int cnt = 1;cnt <= TOP_NUM;++cnt){
+				if((cnt %3) == 0){
+					fullSum += cnt;
+				}
+				else if((cnt % 5) == 0){
+					fullSum += cnt;
+				}
+			}
+
+			//Stop the timer
+			//timer.stop();
+
+			//Thow a flag to show the problem is solved
+			solved = true;
+
+			//Save the results
+			_result = "The sum of all numbers < " + (TOP_NUM + 1) + " is " + fullSum;
+			System.Console.WriteLine(result);
+		}
+
+		//Reset the problem so it can be run again
+		public override void reset(){
+			base.reset();
+			fullSum = 0;
+		}
+	}
+}
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diff --git a/src/Problems/ProjectEuler.cs b/src/Problems/ProjectEuler.cs
new file mode 100644
index 0000000..784e478
--- /dev/null
+++ b/src/Problems/ProjectEuler.cs
@@ -0,0 +1,8 @@
+namespace mee{
+	public class ProjectEuler{
+		public static void Main(string[] args){
+			Problem1 prob = new Problem1();
+			prob.solve();
+		}
+	}
+}
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