:orphan:
# PetscObjectGetClassName
Gets the class name for any `PetscObject` 
## Synopsis
```
#include "petscsys.h"    
PetscErrorCode PetscObjectGetClassName(PetscObject obj, const char *classname[])
```
Not Collective


## Input Parameter

- ***obj -*** any PETSc object, for example a `Vec`, `Mat` or `KSP`.
Thus must be cast with a (`PetscObject`), for example,
`PetscObjectGetClassName`((`PetscObject`)mat,&classname);



## Output Parameter

- ***classname -*** the class name, for example "Vec"





## See Also
 `PetscObject`, `PetscClassId`, `PetscObjectGetType()`, `PetscObjectGetClassId()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/objects/gcookie.c.html#PetscObjectGetClassName">src/sys/objects/gcookie.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/tutorials/ex7.c.html">src/mat/tutorials/ex7.c</A><BR>


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


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