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<h1>DBcursor->c_count</h1>
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<h3><pre>
#include <db.h>
<p>
int
DBC->c_count(DBC *cursor, db_recno_t *countp, u_int32_t flags);
</pre></h3>
<h1>Description</h1>
<p>The DBcursor->c_count function returns a count of the number of duplicate data
items for the key referenced by the
cursor into the memory location referenced by <b>countp</b>.
If the underlying database does not support duplicate data items the call
will still succeed and a count of 1 will be returned.
<p>The <b>flags</b> parameter is currently unused, and must be set to 0.
<p>If the <b>cursor</b> argument is not yet initialized, the DBcursor->c_count function will return EINVAL.
<p>Otherwise, the DBcursor->c_count function returns a non-zero error value on failure and 0 on success.
<h1>Errors</h1>
<p>The DBcursor->c_count function may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions.
If a catastrophic error has occurred, the DBcursor->c_count function may fail and return
<a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a>, in which case all subsequent Berkeley DB calls will fail
in the same way.
<h1>See Also</h1>
<a href="../api_c/dbc_close.html">DBcursor->c_close</a>,
<a href="../api_c/dbc_count.html">DBcursor->c_count</a>,
<a href="../api_c/dbc_del.html">DBcursor->c_del</a>,
<a href="../api_c/dbc_dup.html">DBcursor->c_dup</a>,
<a href="../api_c/dbc_get.html">DBcursor->c_get</a>
and
<a href="../api_c/dbc_put.html">DBcursor->c_put</a>.
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