#include <iostream>
#include <stdlib.h>
#include <string>
#include <winsock2.h>
#include <mysql.h>
#pragma comment(lib,"ws2_32")
#pragma comment(lib,"libmysql")
using namespace std;
class Student
{
int id;
char name[200];
char sex[100];
char min_zu[220];
char ji_guan[330];
char sheng_fen_zheng_hao[20];
char QQ[20];
char phone[20];
int score;
public:
void show_table();
int main_menu();
void input();
int xiu_gai();
int xiu_gai_menu();
int cha_xun();
int cha_xun_menu();
int del();
int shan_menu();
int score_tong_ji();
int score_tong_ji_menu();
};
class Xu_gai:public Student//修改类
{
public:
void xiu_gai_xue_hao();
void xiu_gai_xing_ming();
void xiu_gai_xing_bie();
void xiu_gai_min_zu();
void xiu_gai_ji_guan();
void xiu_gai_shen_fen_zheng_hao();
void xiu_gai_QQ_hao();
void xiu_gai_dian_hua();
void xiu_gai_cheng_ji();
};
class Cha_xun:public Student//查询类
{
public:
void xue_hao_cha_xun();
void xing_ming_cha_xun();
};
class Shan_chu:public Student//删除类
{
public:
void xue_hao_shan_chu();
void xing_ming_shan_chu();
};
class Score:public Student//成绩统计类
{
public:
void cheng_ji_pai_xu();
void zui_gao_zui_di_fen_xin_xi();
void ping_jun_fen();
void ji_ge_lv();
};
void Score::ji_ge_lv()//全体学生的及格率
{
Student zhao;
system("pause");
system("cls");
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, "latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
printf("\n数据库连接发生错误!");
}
else
{
float a,b;
mysql_query(&mysql,"select count(*) from xueji where score >= 450");
cout<<"及格人数:";
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields = mysql_num_fields(resultset);
while(row=mysql_fetch_row(resultset))
{
cout<<row[0];
a = atoi(row[0]);
cout<<endl;
}
}
mysql_query(&mysql,"select count(*) from xueji");
cout<<"总人数:";
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields = mysql_num_fields(resultset);
while(row=mysql_fetch_row(resultset))
{
cout<<row[0];
b = atoi(row[0]);
cout<<endl;
}
}
cout<<"及格率：";
cout << ((a/b)*100)<<"%" << endl<<endl;
mysql_free_result(resultset);
}
}
void Score::ping_jun_fen()//全体学生的平均分
{
Student zhao;
system("pause");
system("cls");
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, "latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
printf("\n数据库连接发生错误!");
}
else
{
float a,b;
mysql_query(&mysql,"select avg(score) from xueji");
cout<<"平均分:";
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields = mysql_num_fields(resultset);
while(row=mysql_fetch_row(resultset))
{
cout<<row[0];
a = atoi(row[0]);
cout<<endl;
}
}
mysql_free_result(resultset);
}
}
void Score::zui_gao_zui_di_fen_xin_xi()//最高最低分学生的信息
{
Student zhao;
system("pause");
system("cls");
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, "latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
printf("\n数据库连接发生错误!");
}
else
{
float a,b;
mysql_query(&mysql,"select max(score) from xueji");
cout<<"最高分:";
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields = mysql_num_fields(resultset);
while(row=mysql_fetch_row(resultset))
{
cout<<row[0];
a = atoi(row[0]);
cout<<endl;
}
}
mysql_query(&mysql,"select min(score) from xueji");
cout<<"最低分:";
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields = mysql_num_fields(resultset);
while(row=mysql_fetch_row(resultset))
{
cout<<row[0];
b = atoi(row[0]);
cout<<endl;
}
}
mysql_free_result(resultset);
}
}
void Score::cheng_ji_pai_xu()//成绩排序
{
Student zhao;
system("pause");
system("cls");
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, "latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
printf("\n数据库连接发生错误!");
}
else
{
cout<<"**************************************开始成绩排名**************************************"<<endl;
cout<<" 学号 "<<" 姓名 "<<"性别 "<<"民族 "<<"籍贯 "<<" 身份证 "<<" QQ "<<" 电话 "<<" 成绩 "<<endl;
cout<<"--------------------------------------------------------------------------------------"<<endl;
mysql_query(&mysql,"select * from xueji order by score desc");
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
//int numRows = mysql_num_rows(resultset);
int numFields = mysql_num_fields(resultset);
while(row=mysql_fetch_row(resultset))
{
int i;
for(i=0;i<numFields;i++)
{
cout<<" "<<row[i]<<" ";
}
cout<<endl;
cout<<"--------------------------------------------------------------------------------------"<<endl;
}
}
else
{
cout<<"\n无查询结果！";
}
mysql_free_result(resultset);
}
}
void Shan_chu::xing_ming_shan_chu()//按姓名删除
{
Student zhao;
system("pause");
system("cls");
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, "latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
printf("\n数据库连接发生错误!");
}
else
{
char std[220];
char na[200];
cout<<"请输入要删除学籍信息的学生姓名: "<<endl;
cin>>na;
sprintf(std,"delete from xueji where name=‘%s‘;",na);
if(mysql_query(&mysql, std))
{
cout<<"数据查询发生错误"<<endl;
}
else
{
cout<<"删除成功！"<<endl;
}
}
}
void Shan_chu::xue_hao_shan_chu()//按学号删除
{
Student zhao;
system("pause");
system("cls");
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql, MYSQL_SET_CHARSET_NAME, "latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
printf("\n数据库连接发生错误!");
}
else
{
char std[220];
int na;
cout<<"请输入要删除学籍信息的学生学号: "<<endl;
cin>>na;
sprintf(std,"delete from xueji where id=%d;",na);
if(mysql_query(&mysql, std))
{
cout<<"数据查询发生错误"<<endl;
}
else
{
cout<<"删除成功！"<<endl;
}
}
}
void Cha_xun::xing_ming_cha_xun()//姓名查询
{
system("cls");
system("pause");
MYSQL mysql;
mysql_init(&mysql);
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char n[200];
cout<<"请输入要查的姓名："<<endl;
cin>>n;
sprintf(std,"select * from xueji where name=‘%s‘;",n);
if(mysql_query(&mysql, std))
{
printf("\n数据查询发生错误\n");
}
else
{
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields=mysql_num_fields(resultset);//**获得表中的字段
while(row=mysql_fetch_row(resultset))
{
int i=0;
for(i=0;i<numFields;i++)
{
mysql_query(&mysql,"SET NAMES LATIN1");
cout<<" "<<row[i]<<" ";
}
cout<<endl;
}
}
else
{
cout<<"显示无果！";
}
}
mysql_free_result(resultset);
}
}
void Cha_xun::xue_hao_cha_xun()//学号查询
{
system("cls");
system("pause");
MYSQL mysql;
mysql_init(&mysql);
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
int n;
cout<<"请输入要查的学号："<<endl;
cin>>n;
cout<<"--------------------------------------显示查询----------------------------------------"<<endl;
cout<<" 学号 "<<" 姓名 "<<"性别 "<<"民族 "<<"籍贯 "<<" 身份证 "<<" QQ "<<" 电话 "<<" 成绩 "<<endl;
cout<<"--------------------------------------------------------------------------------------"<<endl;
sprintf(std,"select * from xueji where id=%d;",n);
if(mysql_query(&mysql, std))
{
printf("\n数据查询发生错误\n");
}
else
{
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields=mysql_num_fields(resultset);//**获得表中的字段
while(row=mysql_fetch_row(resultset))
{
int i=0;
for(i=0;i<numFields;i++)
{
mysql_query(&mysql,"SET NAMES LATIN1");
cout<<" "<<row[i]<<" ";
}
cout<<endl;
}
cout<<"--------------------------------------------------------------------------------------"<<endl;
}
else
{
cout<<"显示无果！";
}
}
mysql_free_result(resultset);
}
}
void Xu_gai::xiu_gai_cheng_ji()//修改成绩
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的成绩："<<endl;
cin>>m;
sprintf(std,"update xueji set score=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_dian_hua()//修改电话
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的电话："<<endl;
cin>>m;
sprintf(std,"update xueji set phone=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_QQ_hao()//修改QQ号
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的QQ号："<<endl;
cin>>m;
sprintf(std,"update xueji set QQ=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_shen_fen_zheng_hao()//修改身份证号************************************************************
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的身份证号："<<endl;
cin>>m;
sprintf(std,"update xueji set sheng_fen_zheng_hao=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_ji_guan()//修改籍贯
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的籍贯："<<endl;
cin>>m;
sprintf(std,"update xueji set ji_guan=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_min_zu()//修改民族
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的民族："<<endl;
cin>>m;
sprintf(std,"update xueji set min_zu=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_xing_bie()//修改性别
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的性别："<<endl;
cin>>m;
sprintf(std,"update xueji set sex=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_xing_ming()//修改姓名
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
char m[200];
int n;
cout<<"对目标学号信息进行修改："<<endl;
cin>>n;
cout<<"请输入要新的姓名："<<endl;
cin>>m;
sprintf(std,"update xueji set name=‘%s‘ where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
void Xu_gai::xiu_gai_xue_hao()//修改学号
{
system("cls");
system("pause");
cout<<"显示学生数据"<<endl;
Xu_gai zhao;
zhao.show_table();
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
char std[200];
int n,m;
cout<<"请输入要修改的学号："<<endl;
cin>>n;
cout<<"请输入要新的学号："<<endl;
cin>>m;
sprintf(std,"update xueji set id=%d where id=%d;",m,n);
if(mysql_query(&mysql, std))
{
printf("\n数据库更改发生错误\n");
}
else
{
printf("\n数据库更改数据成功\n");
}
}
}
int Student::xiu_gai()//定义修改函数
{
cout<<"进入修改系统..."<<endl;
int h;
Xu_gai geng_zheng;
system("pause");
system("cls");
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
while(1)
{
h=geng_zheng.xiu_gai_menu();
switch(h)
{
case 1:
geng_zheng.xiu_gai_xue_hao();
break;
case 2:
geng_zheng.xiu_gai_xing_ming();
break;
case 3:
geng_zheng.xiu_gai_xing_bie();
break;
case 4:
geng_zheng.xiu_gai_min_zu();
break;
case 5:
geng_zheng.xiu_gai_ji_guan();
break;
case 6:
geng_zheng.xiu_gai_shen_fen_zheng_hao();
break;
case 7:
geng_zheng.xiu_gai_QQ_hao();
break;
case 8:
geng_zheng.xiu_gai_dian_hua();
break;
case 9:
geng_zheng.xiu_gai_cheng_ji();
break;
case 0:
return 0;
break;
default:
cout<<"请选择正确的菜单项进行操作。多谢合作!"<<endl;
}
}
}
return 0;
}
int Student::cha_xun()//查询
{
system("pause");
system("cls");
Cha_xun cha;
MYSQL mysql;
int h;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
while(1)
{
h=cha.cha_xun_menu();
switch(h)
{
case 1:
cha.xue_hao_cha_xun();
break;
case 2:
cha.xing_ming_cha_xun();
break;
case 0:
return 0;
break;
default:
cout<<"请选择正确的菜单项进行操作。多谢合作!"<<endl;
}
}
}
return 0;
}
int Student::del()//删除
{
system("pause");
system("cls");
Shan_chu shan;
MYSQL mysql;
int h;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
while(1)
{
h=shan.shan_menu();
switch(h)
{
case 1:
shan.xue_hao_shan_chu();
break;
case 2:
shan.xing_ming_shan_chu();
break;
case 0:
return 0;
break;
default:
cout<<"请选择正确的菜单项进行操作。多谢合作!"<<endl;
}
}
}
return 0;
}
int Student::score_tong_ji()//成绩统计分析
{
system("pause");
system("cls");
Score tong_ji;
MYSQL mysql;
int h;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
while(1)
{
h=tong_ji.score_tong_ji_menu();
switch(h)
{
case 1:
tong_ji.cheng_ji_pai_xu();
break;
case 2:
tong_ji.zui_gao_zui_di_fen_xin_xi();
break;
case 3:
tong_ji.ping_jun_fen();
break;
case 4:
tong_ji.ji_ge_lv();
break;
case 0:
return 0;
break;
default:
cout<<"请选择正确的菜单项进行操作。多谢合作!"<<endl;
}
}
}
return 0;
}
void Student::input()//录入学生信息
{
system("pause");
system("cls");
Student lu_ru;
char std[200];
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql, "localhost", "root", "123456", "student", 3306, NULL, 0))
{
cout<<"数据库连接错误！"<<endl;
}
else
{
cout<<"请录入学生信息数据"<<endl<<endl<<"录入格式说明：输入一项按Enter键进行下一项的输入"<<endl<<endl;
mysql_query(&mysql, "SET NAMES LATIN1");
cout<<"学号 "<<"姓名 "<<"性别 "<<"民族 "<<"籍贯 "<<"身份证 "<<"QQ "<<"电话 "<<"成绩 "<<endl;
cin>>lu_ru.id>>lu_ru.name>>lu_ru.sex>>lu_ru.min_zu>>lu_ru.ji_guan>>lu_ru.sheng_fen_zheng_hao>>lu_ru.QQ>>lu_ru.phone>>lu_ru.score;
sprintf(std,"insert into xueji VALUES(%d,‘%s‘,‘%s‘,‘%s‘,‘%s‘,‘%s‘,‘%s‘,‘%s‘,%d);"
,lu_ru.id,lu_ru.name,lu_ru.sex,lu_ru.min_zu,lu_ru.ji_guan,lu_ru.sheng_fen_zheng_hao,lu_ru.QQ,lu_ru.phone,lu_ru.score);
mysql_query(&mysql,std);
cout<<"添加成功"<<endl;
}
}
void Student::show_table()//信息表数据的显示
{
system("cls");
MYSQL mysql;
MYSQL_RES *resultset;
MYSQL_ROW row;
mysql_init(&mysql);
mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"latin1");
if(!mysql_real_connect(&mysql,"localhost","root","123456","student",3306,NULL,0))
{
cout<<"\n数据库连接发生错误！";
}
else
{
if(mysql_query(&mysql,"select * from xueji"))
{
cout<<"表格数据显示失败！";
}
else
{
cout<<"--------------------------------------显示信息----------------------------------------"<<endl;
cout<<" 学号 "<<" 姓名 "<<"性别 "<<"民族 "<<"籍贯 "<<" 身份证 "<<" QQ "<<" 电话 "<<" 成绩 "<<endl;
cout<<"--------------------------------------------------------------------------------------"<<endl;
resultset=mysql_store_result(&mysql);
if(mysql_num_rows(resultset)!=NULL)
{
int numFields=mysql_num_fields(resultset);//**获得表中的字段
while(row=mysql_fetch_row(resultset))
{
int i=0;
for(i=0;i<numFields;i++)
{
mysql_query(&mysql,"SET NAMES LATIN1");
cout<<" "<<row[i]<<" ";
}
cout<<endl;
cout<<"--------------------------------------------------------------------------------------"<<endl;
}
}
else
{
cout<<"显示无果！";
}
}
mysql_free_result(resultset);
}
}
int Student::main_menu()//主菜单
{
system("pause");
system("cls");
int s;
cout<<endl<<endl<<endl<<endl<<endl<<endl<<endl
<<" 1: 录入学生信息 "<<endl
<<" 2: 显示学生信息 "<<endl
<<" 3: 查找学生信息 "<<endl
<<" 4: 删除学生信息 "<<endl
<<" 5: 修改学生信息 "<<endl
<<" 6: 统计学生成绩 "<<endl
<<" 0: 退出系统 "<<endl
<<" 请选择:";
cin>>s;
return s;
}
int Student::xiu_gai_menu()//修改菜单
{
system("pause");
system("cls");
int a;
cout<<endl<<endl<<endl<<endl<<endl
<<" 1: 修改学号 "<<endl
<<" 2: 修改姓名 "<<endl
<<" 3: 修改性别 "<<endl
<<" 4: 修改民族 "<<endl
<<" 5: 修改籍贯 "<<endl
<<" 6: 修改身份证 "<<endl
<<" 7: 修改QQ号 "<<endl
<<" 8: 修改手机号 "<<endl
<<" 9: 修改成绩 "<<endl
<<" 0: 返回上一层 "<<endl
<<" 请选择:";
cin>>a;
return a;
}
int Student::cha_xun_menu()//查询菜单
{
system("pause");
system("cls");
int k;
cout<<endl<<endl<<endl<<endl<<endl<<endl<<endl<<endl
<<" 1: 按学号查找 "<<endl
<<" 2: 按姓名查找 "<<endl
<<" 0: 返回上一层 "<<endl
<<" 请选择:";
cin>>k;
return k;
}
int Student::shan_menu()//删除菜单
{
system("pause");
system("cls");
int g;
cout<<endl<<endl<<endl<<endl<<endl<<endl<<endl<<endl
<<" 1: 按学号删除 "<<endl
<<" 2: 按姓名删除 "<<endl
<<" 0: 返回上一层 "<<endl
<<" 请选择:";
cin>>g;
return g;
}
int Student::score_tong_ji_menu()//成绩统计菜单
{
system("pause");
system("cls");
int d;
cout<<endl<<endl<<endl<<endl<<endl<<endl<<endl<<endl
<<" 1: 对成绩进行排序 "<<endl
<<" 2: 最高和最低成绩的学生信息 "<<endl
<<" 3: 全体学生的平均分 "<<endl
<<" 4: 及格率 "<<endl
<<" 0: 返回上一层 "<<endl
<<" 请选择:";
cin>>d;
return d;
}
int main()
{
int n;
Student zhao;
MYSQL mysql;
mysql_init(&mysql);
if(!mysql_real_connect(&mysql,"localhost","root","123456","student",3306,NULL,0))
{
cout<<"\n数据库连接发生错误！";
}
else
{
cout<<"\n\n\n\n\n\n\n\n\n 数据库连接成功！\n\n\n\n\n\n\n\n";
system("PAUSE");
system("cls");
while(1)
{
n=zhao.main_menu();
switch(n)
{
case 1:
zhao.input();
break;
case 2:
zhao.show_table();
break;
case 3:
zhao.cha_xun();
break;
case 4:
zhao.del();
break;
case 5:
zhao.xiu_gai();
break;
case 6:
zhao.score_tong_ji();
break;
case 0:
system("cls");
cout<<endl<<endl<<endl<<endl<<endl<<endl<<endl<<endl;
cout<<" ··········"<<endl;
cout<<" ***···谢谢使用···***"<<endl;
cout<<" ··········"<<endl<<endl<<endl<<endl<<endl<<endl;
exit(1);
break;
default:
cout<<"请选择正确的菜单项进行操作。多谢合作!"<<endl;
}
}
}
return 0;
}
高校学生学籍系统C++&mysql