mysql_warning_count(3) MariaDB Connector/C mysql_warning_count(3)

mysql_warning_count - Returns the number of warnings

#include <mysql.h>
unsigned int mysql_warning_count(MYSQL * mysql);

Returns the number of warnings from the last executed query, or zero if there are no warnings.

mysql - a mysql handle, which was previously allocated by mysql_init(3) and connected by mysql_real_connect(3).

For retrieving warning messages you should use the SQL command SHOW WARNINGS.
If SQL_MODE TRADITIONAL is enabled an error instead of warning will be returned. For detailed information check the server documentation.

Returns the number of warnings

mysql_error(3)
mysql_errno(3)
Version 3.4