mysql_warning_count - Man Page
Name
mysql_warning_count - Returns the number of warnings
Synopsis
#include <mysql.h> unsigned int mysql_warning_count(MYSQL * mysql);
Description
Returns the number of warnings from the last executed query, or zero if there are no warnings.
Parameter
mysql- a mysql handle, which was previously allocated by mysql_init(3) and connected by mysql_real_connect(3).
Notes
- For retrieving warning messages you should use the SQL command 
SHOW WARNINGS. - If SQL_MODE 
TRADITIONALis enabled an error instead of warning will be returned. For detailed information check the server documentation. 
Return value
Returns the number of warnings
See also
Referenced By
mysql_info(3), mysql_stmt_warning_count(3).
Version 3.4 MariaDB Connector/C