:orphan:
# PCCompositeAddPC
Adds another `PC` to the composite `PC`. 
## Synopsis
```
#include "petscksp.h" 
PetscErrorCode PCCompositeAddPC(PC pc, PC subpc)
```
Collective


## Input Parameters

- ***pc    -*** the preconditioner context
- ***subpc -*** the new preconditioner





## See Also
 `PCCOMPOSITE`, `PCCompositeAddPCType()`, `PCCompositeGetNumberPC()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/composite/composite.c.html#PCCompositeAddPC">src/ksp/pc/impls/composite/composite.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/composite/composite.c.html#PCCompositeAddPC_Composite">PCCompositeAddPC_Composite in src/ksp/pc/impls/composite/composite.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/composite/composite.c)


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