#include <iostream>
#include <mysql/mysql.h>
#include <string>
#include <unistd.h>

const std::string host = "47.100.131.185";
const std::string user = "jzh";
const std::string passwd = "a123";
const std::string db = "gogs";
const unsigned int port = 3306;

int main()
{
    std::cout<<"mysql clientversion: "<<mysql_get_client_info()<<std::endl;
    MYSQL *my = mysql_init(nullptr);
    if (nullptr == my) {
        std::cerr<<"init m=MySQL error"<<std::endl;
        return 1;
    }
    std::cout<<my<<std::endl;
    if (mysql_real_connect(my, host.c_str(), user.c_str(),passwd.c_str(),db.c_str(), port, nullptr, 0) == nullptr) {
        std::cout<<"connect MySQL error"<<std::endl;
        return 2;
    }
    //mysql_set_character_set(my, "utf8");
    std::string cmd = "show tables";
    int n = mysql_query(my, cmd.c_str());
    if (n == 0) {
        std::cout<<cmd<<" success"<<std::endl;
    } else {
        std::cout<<cmd<<" fail"<<std::endl;
    }
    MYSQL_RES *res = mysql_store_result(my);
    if (res == nullptr) {
        std::cout<<"mysql_store_result error"<<std::endl;
        return 3;
    }
    int rows = mysql_num_rows(res);
    int fields = mysql_num_fields(res);
    std::cout<<"row = "<<rows<<std::endl;
    std::cout<<"column = "<<fields<<std::endl;
    for (int i = 0; i < rows; i++) {
        MYSQL_ROW row = mysql_fetch_row(res);
        for (int j = 0; j < fields; j++) {
            std::cout<<row[j]<<"\t";
        }
        std::cout<<"\n";
    }
    mysql_free_result(res);
    mysql_close(my);
    return 0;
}