mysql_error

const char *mysql_error(MYSQL *mysql)

provides the error description of the last failed function. the function was executed successfully, it returns an empty string

#include <stdio.h> /* including standard library */ 
#include <mysql/mysql.h>
 
MYSQL *my;
MYSQL_RES *result;
int main( void ){
char host[20];
char user[20];
char pass[20];
 
my = mysql_init(NULL);
 
 
sprintf(host,"localhost");
sprintf(user,"username");
sprintf(pass,"password");
 
if (my == NULL ) {
printf("Cant initalisize MySQL\n");
return 1;
}
 
if( mysql_real_connect (my,host,user,pass,NULL,0,NULL,0)  == NULL) {
  printf("Error cant login\n");
  } else {
  printf("Login correct\n");
  }
 
mysql_select_db(my, "test");
mysql_query(my, "SELECT * FROM wrongdb WHERE 1;");
 
result = mysql_store_result(my);
 
if(mysql_errno(my))
{
    fprintf(stderr, "Error: %s\n", mysql_error(my));
}
 
mysql_close(my);
return 0;
}

  Login correct
  Error: Table 'test.wrongdb' doesn't exist