# PetscFortranAddr
a variable type in Fortran that can hold a regular C pointer. 
## Note
Used, for example, as the file argument in `PetscFOpen()`




## See Also
  `PetscOffset`, `PetscInt`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/ftn-custom/zutils.c.html#PetscFortranAddr">src/sys/ftn-custom/zutils.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/tutorials/ex21.c.html">src/vec/vec/tutorials/ex21.c.html</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/ftn-custom/zutils.c)


[Index of all Sys routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
