Create select_db.h

select_db.h

@@ -0,0 +1,56 @@
+#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