vtkdatafile

/*make vtkdatafile */
#include <stdio.h>

int main ()
{
    FILE *fp;
    fp=fopen("vtkdatafile.txt","w");
    fprintf(fp,"# vtk DataFile Version 3.0\n");
    fprintf(fp,"vtk output\n");
    fprintf(fp,"ASCII\n");
    fprintf(fp,"DATASET UNSTRUCTURED_GRID\n");
    fclose (fp);

    return 0;
}