QSprob QSload_prob (const char *probname, int ncols, int nrows,
    int *cmatcnt, int *cmatbeg, int *cmatind, double *cmatval,
    int objsense, double *obj, double *rhs, char *sense, double *lower,
    double *upper, const char **colnames, const char **rownames)

/*                                                      */
/*  Using QSload_prob to load the following LP problem  */
/*       Maximize  3.0x + 2.0y + 4.0z                   */
/*       Subject to                                     */
/*                 3.1x + 2.3y + 1.4z <= 12.2           */
/*                 5.0x + 1.1y         = 10.0           */
/*                 x >= 2.0                             */
/*                 y free                               */
/*                 1.0 <= z <= 10.0                     */
/*                                                      */

int rval;
QSprob p;
int cmatcnt[3]    = { 2, 2, 1 };
int cmatbeg[3]    = { 0, 2, 4 };
int cmatind[5]    = { 0, 1, 0, 1, 0 };
double cmatval[5] = { 3.1, 5.0, 2.3, 1.1, 1.4 };
double obj[3]     = { 3.0, 2.0, 4.0 };
double rhs[2]     = { 12.2, 10.0 };
char sense[2]     = { 'L', 'E' };
double lower[3]   = { 2.0, -QS_MAXDOUBLE, 1.0 };
double upper[3]   = { QS_MAXDOUBLE, QS_MAXDOUBLE, 10.0 };
const char *colnames[3] = { "x", "y", "z" };

p = QSload_prob ("small", 3, 2, cmatcnt, cmatbeg, cmatind, cmatval,
                  QS_MAX, obj, rhs, sense, lower, upper, colnames,
                  (char **) NULL);

if (p == (QSprob) NULL) {
    fprintf (stderr, "Unable to load the LP problem\n");
} else {
    /* As a check, write the LP to a file */
    rval = QSwrite_prob (p, "small.lp", "LP");
    if (rval) {
        fprintf (stderr, "Could not write LP, error code %d\n", rval);
    }
}