Using Concert Technology in C++

ILOG CPLEX 11.0 Getting Started > Tutorials > Solving an LP with ILOG CPLEX > Using Concert Technology in C++

Using Concert Technology in C++

Here is a C++ application using ILOG CPLEX in Concert Technology to solve the example. An expanded form of this example is discussed in detail in Concert Technology Tutorial for C++ Users.

#include <ilcplex/ilocplex.h>
ILOSTLBEGIN
 
int
main (int argc, char **argv)
{
   IloEnv env;
   try {
      IloModel model(env);
      IloNumVarArray vars(env);
      vars.add(IloNumVar(env, 0.0, 40.0));
      vars.add(IloNumVar(env));
      vars.add(IloNumVar(env));
      model.add(IloMaximize(env, vars[0] + 2 * vars[1] + 3 * vars[2]));
      model.add( - vars[0] +     vars[1] + vars[2] <= 20);
      model.add(   vars[0] - 3 * vars[1] + vars[2] <= 30);
 
      IloCplex cplex(model);
      if ( !cplex.solve() ) {
         env.error() << "Failed to optimize LP." << endl;
         throw(-1);
      }
 
     IloNumArray vals(env);
      env.out() << "Solution status = " << cplex.getStatus() << endl;
      env.out() << "Solution value = " << cplex.getObjValue() << endl;
      cplex.getValues(vals, vars);
      env.out() << "Values = " << vals << endl;
   }
   catch (IloException& e) {
      cerr << "Concert exception caught: " << e << endl;
   }
   catch (...) {
      cerr << "Unknown exception caught" << endl;
   }
 
   env.end();
 
   return 0;
}  // END main

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