vs2010连接mysql数据库进行查询修改操作 c++

  本程序是vs2010连接mysql数据库后，并在运行界面进行查询修改等操作~~学习阶段的第一个程序，做我自我鼓励吧！

vs运行界面：

mysql运行界面

#include<Windows.h> 
#include<string> 
#include<iostream> 
#include<mysql.h> 
#include<stdio.h>
#include <string>
using namespace std;
char *user="root";       //用户名
char *pass="jiangshan";    //密码
char *db="jiang";             //所用的数据库
unsigned int port =3306;      //
MYSQL mydata;
MYSQL_RES *res;
MYSQL_FIELD *fd;
MYSQL_ROW row;
string SqlText;

bool show();
bool insert();
bool change();
bool find();
string findbyid();
bool findbyname();
bool changename(string id);
bool changesex(string id);


int main()
{
    if (0!=mysql_library_init(0,NULL,NULL))
    {
        cout<<"mysql_library_init() failed"<<endl;
        return -1;
    } 
    if (NULL==mysql_init(&mydata))
    {
        cout<<"mysql_init() failed!"<<endl;
        return -1;
    }
    if (NULL==mysql_real_connect(&mydata,"",user,pass,db,port,NULL,0))
    {
        cout<<"mysql_real_connect() failed!"<<endl;
        return -1;
    }
    SqlText="create table if not exists stu";
    SqlText+="(id int(10) primary key auto_increment,name char(30) not null,sex tinyint(1) default 0) default character set utf8 engine myisam;";
    if (0!=mysql_query(&mydata,SqlText.c_str()))
    {
        cout<<"mysql_query() create table failed"<<endl;
        return -1;
    }
    while(1)
    {
        cout<<"**********************"<<endl;
        cout<<" 1   查看"<<endl;
        cout<<" 2   插入"<<endl;
        cout<<" 3   修改"<<endl;
        cout<<" 4   查询"<<endl;
        cout<<" or  退出"<<endl;
        cout<<"**********************"<<endl;
        int i;
        cin>>i;
        switch(i)
        {
        case 1:
            SqlText="select * from stu;";
            show();
            break;
        case 2:
            insert();
            break;
        case 3:
            change();
            break;
        case 4:
            find();
            break;
        default:
            return 0;
        }
    }
    return 0;
}

//从表中读取所有的数据
bool show()
{
    cout<<"***********************************"<<endl;
    if(0!=mysql_query(&mydata,SqlText.c_str()))
    {
        cout<<"mysql_query() select data failed"<<endl;
        return false;
    }
    res=mysql_store_result(&mydata);
    int rowcount = mysql_num_rows(res);
    unsigned int fieldcount = mysql_num_fields(res);
    MYSQL_FIELD *field =NULL;

    //打印个字段名称
    for(int i=0;i<fieldcount;i++)
    {
        field = mysql_fetch_field_direct(res,i);
        cout<<field->name<<"		";
    }
    cout<<endl;
    //打印各行
    row=mysql_fetch_row(res);
    while (NULL!=row)
    {
        for (int i=0;i<fieldcount;i++)
        {
            cout<<row[i]<<"		";
        }
        cout<<endl;
        row=mysql_fetch_row(res);
    }
    cout<<"***********************************"<<endl;
    return true;
}

//插入数据
bool insert()
{
    string name;
    cout<<"请输入姓名"<<endl;
    cin>>name;
    string sex;
    cout<<"请输入性别(0：男，1：女)"<<endl;
    cin>>sex;
    
    SqlText="insert into stu(name,sex) values(' ";
    SqlText+=name;
    SqlText+="',";
    SqlText+=sex;
    SqlText+=");";
    
    //SqlText="insert into stu(name,sex)  values('haha',1);";   //这个是范例，字符串必须用 '  ' 串起来
    if(0!=mysql_query(&mydata,SqlText.c_str()))
    {
        cout<<"insert failed!"<<endl;
            return false;
    }
    return true;
}

//查找
bool find()
{
    cout<<"**********************"<<endl;
    cout<<" 通过何种方式查找"<<endl;
    cout<<" 1   id"<<endl;
    cout<<" 2   name"<<endl;
    cout<<"**********************"<<endl;
    int i;
    string a;
    cin>>i;
    switch(i)
    {
    case 1:
        a=findbyid();
        break;
    case 2:
        findbyname();
        break;
    default:
        return false;
    }
    cout<<endl;
    return true;
}

string findbyid()
{
    cout<<"输入你的id"<<endl;
    string id;
    cin>>id;
    SqlText="select * from stu where id=";
    SqlText+=id;
    SqlText+=";";
    show();
    return id;
}

bool findbyname()
{
    cout<<"输入你的name"<<endl;
    string name;
    cin>>name;
    
    SqlText="select * from stu where name =' ";
    SqlText+=name;
    SqlText+="' ;";
    //SqlText="select * from stu where name ='jiang';";
    show();
    return true;
}

//修改
bool change()
{
    string id=findbyid();
    cout<<"你想修改什么"<<endl;
    cout<<"1   name"<<endl;
    cout<<"2   sex"<<endl;
    int i;
    cin>>i;
    switch(i)
    {
    case 1:
        changename(id);
        break;
    case 2:
        changesex(id);
        break;
    default:
        return false;
    }
    return true;
}

bool changename(string id)
{
    cout<<"请输入要替换的名字"<<endl;
    string name;
    cin>>name;
    SqlText="update stu set name='";
    SqlText+=name;
    SqlText+="' where id=";
    SqlText+=id;
    SqlText+=";";
    if(0!=mysql_query(&mydata,SqlText.c_str()))
    {
        cout<<"change name failed!"<<endl;
        return false;
    }
    SqlText="select * from stu where id=";
    SqlText+=id;
    SqlText+=";";
    show();
    return true;
}

bool changesex(string id)
{
    cout<<"请输入要替换的性别"<<endl;
    string sex;
    cin>>sex;
    SqlText="update stu set sex=";
    SqlText+=sex;
    SqlText+=" where id=";
    SqlText+=id;
    SqlText+=";";
    if(0!=mysql_query(&mydata,SqlText.c_str()))
    {
        cout<<"change is failed!"<<endl;
        return false;
    }
    SqlText="select * from stu where id=";
    SqlText+=id;
    SqlText+=";";
    show();
}