Make the LP in call_highs_from_csharp.cs feasible!

examples/call_highs_from_csharp.cs

@@ -6,18 +6,22 @@
 
 class Program {
    static void Main(string[] args) {
-       // Test with an LP
-      double[] cc = {1, -2};
-      double[] cl = {0, 0};
-      double[] cu = {10, 10};
-      double[] rl = {0, 0};
-      double[] ru = {2, 1};
-      int[] astart = {0, 2};
-      int[] aindex = {0, 1, 0, 1};
-      double[] avalue = {1, 2, 1, 3};
+       // Illustrate the solution of a QP, after first solving just the LP
+       //
+       // minimize x_2 + (1/2)(2x_1^2 - 2x_1x_3 + 0.2x_2^2 + 2x_3^2)
+       //
+       // subject to x_1 + x_2 + x_3 >= 1; x>=0
+       double[] cc = {0, 1, 0};
+      double[] cl = {0, 0, 0};
+      double[] cu = {1.0e30, 1.0e30, 1.0e30};
+      double[] rl = {1};
+      double[] ru = {1.0e30};
+      int[] astart = {0, 3};
+      int[] aindex = {0, 1, 2};
+      double[] avalue = {1, 1, 1};
       HighsObjectiveSense sense = HighsObjectiveSense.kMinimize;
       double offset = 0;
-      HighsMatrixFormat a_format = HighsMatrixFormat.kColwise;
+      HighsMatrixFormat a_format = HighsMatrixFormat.kRowwise;
 
       HighsModel model = new HighsModel(cc, cl, cu, rl, ru, astart, aindex, avalue, null, offset, a_format, sense);
 
@@ -44,9 +48,9 @@ static void Main(string[] args) {
       for (int i=0; i<sol.colvalue.Length; i++) {
          Console.WriteLine("x" + i + " = " + sol.colvalue[i] + " is " + bas.colbasisstatus[i]);
       }
-       // Add a Hessian
+       // Add the Hessian
       int dim = 2;
-      int[] qstart = {0, 2};
+      int[] qstart = {0, 2, 3};
       int[] qindex = {0, 1, 1};
       double[] qvalue = {2, -1, 2};
       HessianFormat q_format = HessianFormat.kTriangular;