select_db.h

#ifndef SELECT_DB_H
#define SELECT_DB_H
#include <iostream>
#include <string>
#include <vector>
#include "libsqlite.hpp"
#include "insert_db.h"
using namespace std;

class select_db
{
protected:
  string modules;
  string classes;
  int students, studentID;
  string lecturers, rooms;
  string name, surname, username, email, password, retry, log1, pass1;
  int Timing;
  int Term;
public:
  select_db(){
    try
    {
    sqlite::sqlite db("School.db");

    auto cur = db.get_statement();          
    cur->set_sql("SELECT username,password FROM STUDENTDETAILS WHERE username=? AND password=?;");
    cur->prepare();
    cur->bind( 1, username );
    cur->bind( 2, password );
    
    string sqlusername;
    string sqlpassword;

    while (cur->step()){
      sqlusername=cur->get_str(0);
      sqlpassword=cur->get_str(1);
       
    }

    }
    if sqlusername == null or sqlpassword==null:
      return "invalid"
    return sqlusername,sqlpassword;
  }
  catch( sqlite::exception e )
    {
        cerr << e.what() << endl;
    }
    
      return true;
  } 
  }
};

#endif