# PetscInitializeFortran#

Routine that should be called soon AFTER the call to PetscInitialize() if one is using a C main program that calls Fortran routines that in turn call PETSc routines.

## Synopsis#

PetscErrorCode PetscInitializeFortran(void)


Collective on PETSC_COMM_WORLD

## Note#

PetscInitializeFortran() initializes some of the default viewers, communicators, etc. for use in the Fortran if a user’s main program is written in C. PetscInitializeFortran() is NOT needed if a user’s main program is written in Fortran; in this case, just calling PetscInitialize() in the main (Fortran) program is sufficient.

PetscInitialize()

beginner

## Location#

src/sys/objects/ftn-custom/zstartf.c

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