13-5.txt

《linux应用开发技术详解》的配套代码

#include <mysql.h>
#include <stdio.h>

main() {
   MYSQL *conn;
   MYSQL_RES *res;
   MYSQL_ROW row;

   char *server = "mysql-server.ucl.ac.uk";
   char *user = "ucabwww";
   char *password = "secret";
   char *database = "ucabwww";
   
   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));
      exit(0);
   }

   /* send SQL query */
   if (mysql_query(conn, "SELECT * FROM people WHERE age > 30")) {
      fprintf(stderr, "%s\n", mysql_error(conn));
      exit(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]);
   mysql_close(conn);
}