/// <summary>
        /// Sets the left and right nodes of our curNode to the first two letters of our prefix accordingly
        /// Uses recursives methods if certain conditions are met
        /// </summary>
        /// <param name="curNode">Either the root of the equation or a branch</param>
        /// <param name="Prefix">Prefix input from the text file</param>
        public void TreeBuilder(Node curNode, string Prefix)
        {
            //Create a new node for the current nodes left branch to
            Node leftNode = new Node(Prefix.Substring(count, 1));

            curNode.SetLeft(leftNode);
            count++;

            //Call TreeBuilder again if the left branch is an operation
            //Sets the TreeBuilder parameter to the current node's left branch asa well as the same prefix
            if (leftNode.GetCargo() == "+" || leftNode.GetCargo() == "-" || leftNode.GetCargo() == "*" || leftNode.GetCargo() == "/" || leftNode.GetCargo() == "^")
            {
                TreeBuilder(curNode.GetNextL(), Prefix);
            }

            //Create a new node for the current nodes right branch to
            Node rightNode = new Node(Prefix.Substring(count, 1));

            curNode.SetRight(rightNode);
            count++;

            //Call TreeBuilder again if the right branch is an operation
            //Sets the TreeBuilder parameter to the current node's right branch asa well as the same prefix
            if (rightNode.GetCargo() == "+" || rightNode.GetCargo() == "-" || rightNode.GetCargo() == "*" || rightNode.GetCargo() == "/" || rightNode.GetCargo() == "^")
            {
                TreeBuilder(curNode.GetNextR(), Prefix);
            }
        }