How to connect mysql server using C\C++?

#include<mysql.h>
#include<stdio.h>
int main() {
   MYSQL *conn;
   MYSQL_RES *res;
   MYSQL_ROW row;
   char *server = "localhost";
   char *user = "root";
   char *password = "user";
   char *database = "";
   
   conn = mysql_init(NULL);
   
   /* Connect to database */
   if (!mysql_real_connect(conn, server,
         user, password, database, 0, NULL, 0)) {
      fprintf(stderr, "%s\n", mysql_error(conn));
      return(0);
   }
   /* send SQL query */
   if (mysql_query(conn, "SELECT * FROM people WHERE age > 30")) {
      fprintf(stderr, "%s\n", mysql_error(conn));
      return(0);
   }
   res = mysql_use_result(conn);
   
   /* output fields 1 and 2 of each row */
   while ((row = mysql_fetch_row(res)) != NULL)
      printf("%s %s\n", row[1], row[2]);
   /* Release memory used to store results and close connection */
   mysql_free_result(res);
   mysql_close(conn);
}