Instantiate the problem as an object

Tells how to instantiate a problem object in the C API.

After you have initialized a CPLEX environment, your next step is to instantiate (that is, create and initialize) a problem object by calling CPXcreateprob. This routine returns a C pointer to the problem object. Your application then passes this pointer to other routines of the Callable Library.

Most applications will use only one problem object, though CPLEX allows you to create multiple problem objects within a given CPLEX environment.