Solve

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Solve

After you have declared the decision variables and added the constraints and objective function to the model, your application is ready to search for a solution.


Step 9 -	Search for a solution

Go to step 9 in the file, and add this line to make your application search for a solution.

         if ( cplex.Solve() ) {


Step 10 -	Display the solution

Go to the comment

class="bluelink">step 10 in the file, and add these lines to enable your application to display any solution found in step 9. double[] x = cplex.GetValues(var[0]); double[] dj = cplex.GetReducedCosts(var[0]); double[] pi = cplex.GetDuals(rng[0]); double[] slack = cplex.GetSlacks(rng[0]); cplex.Output().WriteLine("Solution status = " + cplex.GetStatus()); cplex.Output().WriteLine("Solution value = " + cplex.ObjValue); int ncols = cplex.Ncols; for (int j = 0; j < ncols; ++j) { cplex.Output().WriteLine("Column: " + j +" Value = " + x[j] +" Reduced cost = " + dj[j]); } int nrows = cplex.Nrows; for (int i = 0; i < nrows; ++i) { cplex.Output().WriteLine("Row : " + i +" Slack = " + slack[i] +" Pi = " + pi[i]); } }


Step 11 -	Save the model to a file

If you want to save your model to a file in LP format, go to the comment step 11 in your application file, and add this line.

         cplex.ExportModel("lpex1.lp");

If you have followed the steps in this tutorial interactively, you now have a complete application that you can compile and execute.

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