Example lpex6.c
Shows an example of starting from an advanced basis in the C API.
The example, lpex6.c, resembles one you may have
studied in the Getting Started manual, lpex1.c.
This example differs from that one in these ways:
In the
mainroutine, the arrayscstatandrstatset the status of the initial basis.After the problem data has been copied into the problem object, the basis is copied by a call to
CPXcopybase.After the problem has been optimized, the iteration count is printed. For the given data and basis, the basis is optimal, so no iterations are required to optimize the problem.
The application begins with declarations of arrays to store the
solution of the problem. Then, before it calls any other CPLEX routine,
the application invokes the Callable Library routine CPXopenCPLEX to
initialize the CPLEX environment. After the environment has been initialized,
the application calls other Callable Library routines, such as CPXsetintparam with
the argument CPX_PARAM_SCRIND to direct output to
the screen and most importantly, CPXcreateprob to
create the problem object. The routine populatebycolumn builds
the problem object, and as noted earlier, CPXcopybase copies
the advanced starting basis.
Before the application ends, it calls CPXfreeprob to
free space allocated to the problem object and CPXcloseCPLEX to
free the environment.
The complete program lpex6.c appears online in
the standard distribution at yourCPLEXinstallation /examples/src.