#include <stdio.h>
#include <stdlib.h>
#include <glpk.h>
#include <assert.h>

#define WHATEVER -10

int main(void) {     
  glp_prob *lp;
  lp = glp_create_prob();
  glp_set_prob_name(lp, "err");
  glp_add_cols(lp, 1);
  glp_add_rows(lp, 1);
  glp_set_col_name(lp, 1, "x");
  glp_set_col_bnds(lp, 1, GLP_UP, WHATEVER, 0.5);

  int status = lpx_write_cpxlp(lp, "err.lp");
  assert(status == 0);

  glp_delete_prob(lp);
  return 0;
}