:orphan:
# PetscStrbeginswith
Determines if a string begins with a certain string 
## Synopsis
```
static inline PetscErrorCode PetscStrbeginswith(const char a[], const char b[], PetscBool *flg)
```
Not Collective, No Fortran Support


## Input Parameters

- ***a -*** string to search
- ***b -*** string to begin with



## Output Parameter

- ***flg -*** `PETSC_TRUE` if `a` begins with `b`, `PETSC_FALSE` otherwise





## Notes
Both `a` and `b` may be `NULL` (in which case `flg` is set to `PETSC_FALSE`) but not
either.

`a` and `b` may point to the same string.


## See Also
 `PetscStrendswithwhich()`, `PetscStrendswith()`, `PetscStrtoupper`,
`PetscStrtolower()`, `PetscStrrchr()`, `PetscStrchr()`, `PetscStrncmp()`, `PetscStrlen()`,
`PetscStrcmp()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscstring.h.html#PetscStrbeginswith">include/petscstring.h</A>


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