Removed spaces from top-level directory names.

Spaces tend to cause annoyances in a Unix-style shell environment.
This change fixes that.

87_3-D_Plot/csharp/Plot/Program.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace Plot
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            PrintTitle();
+
+            foreach (var row in Function.GetRows())
+            {
+                foreach (var z in row)
+                {
+                    Plot(z);
+                }
+                Console.WriteLine();
+            }
+        }
+
+        private static void PrintTitle()
+        {
+            Console.WriteLine("                                3D Plot");
+            Console.WriteLine("               Creative Computing  Morristown, New Jersey");
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine();
+        }
+
+        private static void Plot(int z)
+        {
+            var x = Console.GetCursorPosition().Top;
+            Console.SetCursorPosition(z, x);
+            Console.Write("*");
+        }
+    }
+}