Actual source code: ex1.c
petsc-3.4.2 2013-07-02

      2: static char help[] = "Appends to an ASCII file.\n\n";

      4: /*T
      5:    Concepts: viewers^append
      6: T*/

      8: #include <petscviewer.h>

     12: int main(int argc,char **args)
     13: {
     14:   PetscViewer    viewer;
     15:   PetscInt       i;

     18:   PetscInitialize(&argc,&args,(char*)0,help);
     19:   PetscViewerCreate(PETSC_COMM_WORLD, &viewer);
     20:   PetscViewerSetType(viewer, PETSCVIEWERASCII);
     21:   PetscViewerFileSetMode(viewer, FILE_MODE_APPEND);
     22:   PetscViewerFileSetName(viewer, "test.txt");
     23:   for (i = 0; i < 10; ++i) {
     24:     PetscViewerASCIIPrintf(viewer, "test line %d\n", i);
     25:   }
     26:   PetscFinalize();
     27:   return 0;
     28: }