#include <stdio.h>
#include <windows.h>
#include <mysql.h> int main()
{MYSQL mysql;mysql_init(&mysql); //初始化mysql结构if(!mysql_real_connect(&mysql,"localhost","myuser","123456","student_db",3306,NULL,0))printf("\n连接数据库时发生错误!\n");elseprintf("\n连接数据库成功!\n");mysql_close(&mysql); //释放数据库return 0;
}

// test.cpp : Defines the entry point for the console application.
//
#include <stdio.h>
#include <windows.h>
#include "StdAfx.h"#include <winsock.h>
#include <iostream>
#include <string>
#include <mysql.h>
using namespace std;
//不需要单步调试的就注释掉
//#define STEPBYSTEP  void pause(){  #ifdef STEPBYSTEP  system("pause");  #endif
}
void writeToFile(const char *s)
{  FILE *fp=fopen("info.txt","rw");  fprintf(fp,s);  fclose(fp);  }  /* int main(){MYSQL mysql;mysql_init(&mysql); //初始化mysql结构if(!mysql_real_connect(&mysql,"localhost","myuser","123456","student_db",3306,NULL,0))printf("\n连接数据库时发生错误!\n");elseprintf("\n连接数据库成功!\n");mysql_close(&mysql); //释放数据库return 0;
}*/
int main(int argc, char* argv[]){  cout<<"start...."<<endl;  pause();  MYSQL mysql;  if(0==mysql_library_init(0,NULL,NULL))  {  cout<<"mysql_library_init succeed"<<endl;  }else{  cout<<"mysql_library_init failed"<<endl;  return -1;  }  pause();  if(NULL!=mysql_init(&mysql))  {  cout<<"mysql_init succeed"<<endl;  }else{  cout<<"mysql_init failed"<<endl;  return -1;  }  pause();  if(0==mysql_options(&mysql,MYSQL_SET_CHARSET_NAME,"gb2312"))  {  cout<<"mysql_option succeed"<<endl;  }else{  cout<<"mysql_option failed"<<endl;  return -1;  }  pause();  if(NULL!=mysql_real_connect(&mysql,"localhost","myuser","123456","student_db",3306,NULL,0))  {  cout<<"mysql_real_connect succeed"<<endl;  }else{  cout<<"mysql_real_connect failed"<<endl;  return -1;  }  pause();  string sql;  sql="select * from sgroup";  MYSQL_RES *result=NULL;  if(0==mysql_query(&mysql,sql.c_str()))  {  cout<<"mysql_query select succeed"<<endl;  result=mysql_store_result(&mysql);  int rowcount=mysql_num_rows(result);  cout<<"row count:"<<rowcount<<endl;  unsigned int fieldcount=mysql_num_fields(result);  MYSQL_FIELD *field=NULL;  for(unsigned int i=0;i<fieldcount;i++)  {  field=mysql_fetch_field_direct(result,i);  cout<<field->name<<"\t\t";  }  cout<<endl;  MYSQL_ROW row=NULL;  row=mysql_fetch_row(result);  while(NULL!=row)  {  for(int i=0;i<fieldcount;i++){  cout<<row[i]<<"\t\t";  }  cout<<endl;  row=mysql_fetch_row(result);  }  }else{  cout<<"mysql_query select data failed"<<endl;  mysql_close(&mysql);  return -1;  }  pause();  /*sql="drop table user_info";  if(0==mysql_query(&mysql,sql.c_str()))  {  cout<<"mysql_query drop table succeed"<<endl;  }else{  cout<<"mysql_query drop table failed"<<endl;  mysql_close(&mysql);  return -1;  }  */mysql_free_result(result);  mysql_close(&mysql);  mysql_server_end();  system("pause");  return 0;
}