int QSset_param (QSprob p, int whichparam, int newvalue)

/* p is a QSprob, a handle to an existing LP problem.                 */
/* Set the QSdual_opt() solver to work with the Dantzig pricing rule. */

int rval;

rval = QSset_param (p, QS_PARAM_DUAL_PRICING, QS_PRICE_DDANTZIG);
if (rval) {
    fprintf (stderr,
             "Could not set the parameter, error code %d\n", rval);
}