MySql数据库下载地址：https://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.62-win32.zip

环境配置

添加MySql数据库的.h头文件和.lib静态库文件

头文件所在位置：mysql-5.5.62-win32\include\

静态库所在位置：mysql-5.5.62-win32\lib

将mysql-5.5.62-win32\lib\中的libmysql.dll放到编译目录，供编译的程序调用

codeblocks添加方法参考：codeblocks添加h头文件和lib静态库方法

MySql接口函数

链接数据库：mysql_real_connect(con, dbip, dbuser, dbpasswd, dbname, 3306, NULL, 0)

选择数据库：mysql_select_db(con, dbname)

查询语句：mysql_real_query(con, query, strlen(query))

查看错误：mysql_error(con)

获取查询结果记录集：MYSQL_RES *res = mysql_store_result(con)

读取记录集字段值：MYSQL_ROW *row = mysql_fetch_row(res)

实现代码

#include "stdio.h"
#include <winsock2.h>
#include "mysql.h"

int main()
{
    MYSQL * con; //= mysql_init((MYSQL*) 0);
    MYSQL_RES *res;
    MYSQL_ROW row;
    char tmp[400];
    //database configuartion
    char dbuser[30] = "root";
    char dbpasswd[30] = "root"; // it must be    changed
    char dbip[30] = "localhost";
    char dbname[50] = "test";
    char tablename[50] = "table";
    char *query = NULL;

    int x;
    int y;
    int rt;//return value
    unsigned int t;

    int count = 0;
    
    con = mysql_init((MYSQL*)0);

    if (con != NULL && mysql_real_connect(con, dbip, dbuser, dbpasswd, dbname, 3306, NULL, 0)) {
        if (!mysql_select_db(con, dbname)) {
            printf("成功选择数据库!\n");
            con->reconnect = 1;
            query = "set names \'GBK\'";
            rt = mysql_real_query(con, query, strlen(query));
            if (rt) {
                printf("查询错误: %s !!!\n", mysql_error(con));
            }
            else {
                printf("查询 %s 成功!\n", query);
            }
        }
    }
    else {
        MessageBoxA(NULL, "无法连接数据库，请检查配置!", "", NULL);
    }

    //sprintf(tmp, "insert into %s values(%s,%d,%d)", tablename, "null", x, y); //注意如何向具有自增字段的数据库中插入记录
    sprintf(tmp, "insert into table values(null,'x','x','x','x')");


    rt = mysql_real_query(con, tmp, strlen(tmp));
    if (rt)
    {
        printf("Error making query: %s !!!\n", mysql_error(con));
    }
    else
    {
        printf("%s executed!!!\n", tmp);
    }

    sprintf(tmp, "select * from %s", tablename);
    rt = mysql_real_query(con, tmp, strlen(tmp));
    if (rt)
    {
        printf("Error making query: %s !!!\n", mysql_error(con));
    }
    else
    {
        printf("%s executed!!!\n", tmp);
    }
    res = mysql_store_result(con);//将结果保存在res结构体中

    while (row = mysql_fetch_row(res)) {
        for (t = 0; t<mysql_num_fields(res); t++) {
            printf("%s  ", row[t]);
        }
        printf(".............\n");
        count++;
    }

    printf("number of rows %d\n", count);
    printf("mysql_free_result...\n");
    mysql_free_result(res);
    mysql_close(con);
    system("pause");
    return 0;
}