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c++ mysql

/*
 * test.cpp
 *
 *  Created on: 2010-5-13
 *      Author: Sarah
 */
  #include   "/usr/include/mysql/mysql.h"   /*Ϊ¾ø¶Ô·¾¶*/
  #include   <stdio.h>
#include <stdlib.h>
#include <string>
#include <iostream>
using namespace std;
  int   main(int   argc,char   *argv[])
  {
  char   *user   =   "root",   *pwd   =   "475475",   *dbname   =   "bookman";
  MYSQL   mysql;
  MYSQL_RES   *mysql_ret;
  MYSQL_ROW   mysql_row;
  unsigned   long   num_rows;
  int   ret;
  mysql_init(&mysql);
  if(mysql_real_connect(&mysql,NULL,user,pwd,dbname,0,NULL,0))
  {
  printf("Connection   success!\n");
  //sql×Ö·û´®
  string sqlstr;
  sqlstr ="INSERT INTO booklist VALUES (3,'friend','Jack',2,1);";
  if(0==mysql_query(&mysql,sqlstr.c_str()))
  {
   cout<<"mysql_query() insert data succeed"<<endl;
  }
  else
  {
   cout<<"mysql_query() insert data failed"<<endl;
   return -1;
  }
  ret   =   mysql_query(&mysql,"select   *   from   booklist");
  if(!ret)
  {
  printf("Query   Success!\n");
  mysql_ret   =   mysql_store_result(&mysql);
  if(mysql_ret   !=   NULL)
  {
  printf("Store   Result   Success!\n");
  num_rows   =   mysql_num_rows(mysql_ret);
  if(num_rows &n


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