#include <med.h>
#define MESGERR 1
#include <med_utils.h>
#include <string.h>
int main (int argc, char **argv) {
  med_idt fid;
  const char meshname[MED_NAME_SIZE+1] = "2D unstructured mesh";
  const char fieldname[MED_NAME_SIZE+1] = "TEMPERATURE_FIELD";
  const med_int ncomponent = 1;
  const char componentname[MED_SNAME_SIZE+1] = "TEMPERATURE";
  const char componentunit[MED_SNAME_SIZE+1] = "C";
  const med_float verticesvalues[15] = {  0.,   100., 200.,  300.,  400., 
                                          500.,   600., 700.,  800.,  900,
                                          1000., 1100, 1200., 1300., 1500. };
  const med_int nnodes = 15;
  const med_float tria3values[8] = {1000., 2000., 3000., 4000., 
                                    5000., 6000., 7000., 8000.};
  const med_int ntria3 = 8;
  const med_float quad4values[4] = {10000., 20000., 30000., 4000.};
  const med_int nquad4 = 4;
  int ret=-1;
  
  fid = MEDfileOpen("UsesCase_MEDfield_1.med",MED_ACC_CREAT);
  if (fid < 0) {
    MESSAGE("ERROR : file creation ...");
    goto ERROR;
  }
  
  
 
  
  if (MEDlinkWr(fid,meshname,"./UsesCase_MEDmesh_1.med") < 0) {
    MESSAGE("ERROR : create mesh link ...");
    goto ERROR;
  }
  
  if (MEDfieldCr(fid, fieldname, MED_FLOAT64, 
                 ncomponent, componentname, componentunit,"", 
                 meshname) < 0) {
    MESSAGE("ERROR : create field");
    goto ERROR;
  }
  
  
  if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_NODE,
                      MED_NONE, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
                      nnodes,(unsigned char*) verticesvalues) < 0) {
    MESSAGE("ERROR : write field values on vertices");
    goto ERROR;
  }
  
  
  
  if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_CELL,
                      MED_TRIA3, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT, 
                      ntria3, (unsigned char*) tria3values) < 0) {
    MESSAGE("ERROR : write field values on MED_TRIA3");
    goto ERROR;
  }
  
  if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_CELL,
                      MED_QUAD4, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT, 
                      nquad4, (unsigned char*) quad4values) < 0) {
    MESSAGE("ERROR : write field values on MED_QUAD4 ");
    goto ERROR;
  }
  ret=0;
 ERROR :
  
  
  if (MEDfileClose(fid) < 0) {
    MESSAGE("ERROR : close file ...");             
    ret = -1; 
  } 
  
  return ret;
}