int QSdelete_cols (QSprob p, int num, int *dellist)

/* Assume p is an initialized LP problem with at least 5 columns.  */
/* Use QSdelete_cols() to remove columns 0, 2, and 4.              */

int rval;
int dellist[3] = { 0, 2, 4 };

rval = QSdelete_cols (p, 3, dellist);
if (rval) {
    fprintf (stderr, 
             "QSdelete_cols failed with return code %d\n", rval);
}