[#BIO_puts]
= BIO_puts
:mrdocs:

Write the NUL‐terminated string `buf` to BIO `bp.`

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BIO_puts(
    xref:BIO.adoc[BIO]* bp,
    char const* buf);
----

== Return Value

Number of bytes written, or a negative value on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bp*
| Destination BIO.
| *buf*
| C string to write (excluding the terminating NUL).
|===


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