#include <mysql/mysql.h>
#include <stdio.h>
#include<iostream>
#include<fstream>
#include<string.h>
using namespace std;
MYSQL *conn;
 MYSQL_RES *res;
 MYSQL_ROW row;
 
class people
{
public:
  char name[20];
  int pid;
  int type;
  char phone[30];
public:
  people(int a){};
  people(){
    setall();
  };
  ~people(){};
public:
  void setall();
 
};
 
void people::setall()
{
  cout<<"請輸入該用戶的編號"<<endl;
  cin>>pid;
  cout<<"請輸入該用戶的名字"<<endl;
// gets(name);
  cin>>name;
  cout<<"請輸入該用戶的類型"<<endl;
  cin>>type;
  cout<<"請輸入該用戶的聯(lián)系方式"<<endl;
  cin>>phone;
 
}
void save()
{
  char sql[1000];
  people a;
  sprintf(sql,"insert into student values(%d,'%s',%d,'%s')",a.pid,a.name,a.type,a.phone);
  if(mysql_query(conn, sql))
    {
      printf("添加失敗: (%s)\n",mysql_error(conn));
      return;
    }
    else
    {
      printf("添加成功!\n");
      return;
    }
  return;
}
void update(){
  char sql[1000];
  people a(1);
  cout<<"請輸入你要更改的用戶的編號:";
  cin >> a.pid;
  cout<<"請輸入你要此編號用戶的姓名：";
  cin >> a.name;
  cout <<"請輸入你要更改的用戶的類型：";
  cin >> a.type;
  cout << "請輸入你要更改的用戶的電話：";
  cin >> a.phone;
  sprintf(sql,"update student set name = '%s',usetype=%d,phone='%s' where pid = %d",a.name,a.type,a.phone,a.pid);
    if(mysql_query(conn, sql))
      {
        printf("更改失敗： (%s)\n",mysql_error(conn));
        return;
      }
      else
      {
        printf("更改成功!\n");
        return;
      }
    return;
}
void del()
{
  char sql[1000];
  int pid;
  cout<<"請輸入你要?jiǎng)h除的人的編號"<<endl;
  cin>>pid;
  sprintf(sql,"delete from student where pid = %d",pid);
  if(mysql_query(conn, sql))
    {
      printf("刪除 失敗(%s)\n",mysql_error(conn));
      return;
    }
    else
    {
      printf("刪除成功!\n");
      return;
    }
  return;
}
void menu()
{
  cout<<"1.用戶錄入"<<endl;
  cout<<"2.顯示"<<endl;
  cout<<"3.更改"<<endl;
  cout<<"4.刪除"<<endl;
  cout<<"5.退出"<<endl;
}
void show()
{
   if (mysql_query(conn, "select * from student")) {
     fprintf(stderr, "%s\n", mysql_error(conn));
     return;
    }
    res = mysql_use_result(conn);
 
    printf("編號\t名字\t類型\t聯(lián)系方式\n");
    while ((row = mysql_fetch_row(res)) != NULL){
     cout<<row[0]<<"\t"<<row[1]<<"\t"<<row[2]<<"\t"<<row[3]<<endl;
    }
    mysql_free_result(res);
 
}
int main() {
  int s;
  conn = mysql_init(NULL);
  if (!mysql_real_connect(conn, "localhost",
     "root", "root", "abc", 0, NULL, 0)) {
   fprintf(stderr, "%s\n", mysql_error(conn));
   return -1;
  }
  mysql_query(conn,"set names utf8");
  while(true){
    menu();
    cin>>s;
    if(s==2){show();}
    if(s==1){save();}
    if(s==3){update();}
    if(s==4){del();}
    if(s==5){mysql_close(conn);return 0;}
    cout<<"按任意鍵繼續(xù).."<<endl;
    getchar();
  }
  return 0;
}