Originally posted by: JFCote

Hello,

I searched in vain a way to get the value of the dual variable associated with the upper bound on a variable. 

By exemple, I have the continuous variable

0 <= x_3 <= 1  

I created it this way using C++ Concert : IloNumVar(env,0, 1, ILOFLOAT);

How can I get it?

Thank you

Jean-François

Originally posted by: T_O

I don't know how to do this in Concert, but in general, you have to obtain the reduced cost value of this variable.

Best regards,
Thomas

The function to use in C++-Concert is IloCplex::getReducedCost(). See also the reference documentation of class IloCplex.