PETSc version 3.17.0
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# PetscStrncpy

Copies a string up to a certain length

### Synopsis

    #include "petscsys.h"
    PetscErrorCode PetscStrncpy(char s[], const char t[], size_t n)

Not Collective

### Input Parameters

| t | - pointer to string
| n | - the length to copy

### Output Parameter

| s | - the copied string

### Note

Null string returns a string starting with zero

If the string that is being copied is of length n or larger then the entire string is not copied and the final location of s is set to NULL. This is different then the behavior of strncpy() which leaves s non-terminated if there is not room for the entire string.

Developers Note: Should this be PetscStrlcpy() to reflect its behavior which is like strlcpy() not strncpy()

### See Also

PetscStrcpy(), PetscStrcat(), PetscStrlcat()

### Level

intermediate

### Location

src/sys/utils/str.c

### Examples

src/dm/impls/forest/tutorials/ex1.c.html
src/snes/tutorials/ex17.c.html
src/tao/constrained/tutorials/maros.c.html
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