main.cpp

#include <iostream>
#include<string>
#include<fstream>
using namespace std;

void menu();

//const Global Variables
#include"constant.h"
//Classes
//Abstract Class
class first {
public:
	//pure virtual Function
	virtual void log() = 0;

};
class auth {
protected:
	string username;
	string pass;
	int user, passw;
public:

	void log() {
		cout << "Enter Username  : "; cin >> username;
		cout << "Enter Password : "; cin >> pass;
	}
	void log1() {
		cout << "Enter Username  : "; cin >> user;
		cout << "Enter Password : "; cin >> passw;
	}
};

class check {
private:
	string student_name;
	string student_email;
	string student_class;
	int student_rollNO;
	bool isfound = 0;
public:
	bool check_class(string abc) {
		fstream file;
		file.open("bin/student.txt", ios::in);
		if (!file) {
			cout << "Something went wrong Try again...";

		}
		while (!file.eof()) {
			file >> student_name >> student_email >> student_class >> student_rollNO;
			if (abc == student_class) {
				isfound = 1;
				break;
			}

		}
		return isfound;
	}
	bool check_student(int roll, int pass) {
		fstream file;
		file.open("bin/student.txt", ios::in);
		if (!file) {
			cout << "Something went wrong Try again...";

		}
		while (!file.eof()) {
			file >> student_name >> student_email >> student_class >> student_rollNO;
			if (roll == student_rollNO && pass == student_rollNO) {
				isfound = 1;
				break;
			}

		}
		return isfound;
	}
	bool check_teacher(int roll, int pass) {
		fstream file;
		file.open("bin/teacher.txt", ios::in);
		if (!file) {
			cout << "Something went wrong Try again...";
		}
		while (!file.eof()) {
			file >> student_name >> student_email >> student_class >> student_rollNO;
			if (roll == student_rollNO && pass == student_rollNO) {
				isfound = 1;
				break;
			}

		}
		return isfound;
	}
	string check_subject(int code) {
		string sub;
		fstream file;
		file.open("bin/teacher.txt", ios::in);
		if (!file) {
			cout << "Something went wrong Try again...";

		}
		while (!file.eof()) {
			file >> student_name >> student_email >> student_class >> student_rollNO;
			if (code == student_rollNO) {
				sub = student_class;
				break;
			}

		}
		return sub;
	}

};


class paper {
private:
	int each_marks;
	int total_marks = 0;
	int total_qes;
	char question[555];
	int time_allowed;
	char ans[999];
public:
	void make_paper() {
		cout << "Make Paper \n";
		cout << "Select Subject : " << endl;
		for (int i = 0; i <= 4; i++) {
			cout << "Press " << i + 1 << " For " << subject[i] << endl;
		}
		cout << "==> ";
		int ch;
		cin >> ch;

		if (ch > 0 && ch < 7) {

			cout << "Enter total number of Questions : ";
			cin >> total_qes;
			cout << "Total Time Allowed(in minutes) : ";
			cin >> time_allowed;
			cout << "Enter Question : \n";


			ofstream paper;
			paper.open(file_of_papers[ch - 1]);
			if (!paper) {
				cout << "Something went wrong Try again...\n";
			}
			// paper << subject[ch-1] << " " << time_allowed << " " << endl;

			for (int i = 0; i < total_qes; i++) {

				cout << "Q" << i + 1 << " : ";
				cin.ignore();
				cin.getline(question, 256);
				cout << "Enter marks for this Question : "; cin >> each_marks;
				paper << question << endl;
				paper << each_marks << endl;

				total_marks = total_marks + each_marks;
			}

			cout << "Total marks : " << total_marks;
			paper.close();
			cout << endl;
		}
		else {
			cout << "class Not found" << endl;
		}
	}




};


class date_sheet {
protected:
	string s;
	int d,
		m,
		y;
	string starting_time,
		ending_time;
public:
	//For Date_sheet

	void view_datesheet() {
		ifstream file;
		file.open("bin/date_sheet.txt");

		if (!file) {
			cout << "File Not Found ";

		}
		cout << "\n\t\t\t\t------DateSheet-----\n\n";
		while (!file.eof()) {
			file >> s >> d >> m >> y >> starting_time >> ending_time;
			cout << "Subject : " << s << "\tDate : " << d << "-" << m << "-" << y << "\t\tStarting Time : " << starting_time << " \t\tEnding Time : " << ending_time << endl;

		}

		file.close();

	}
};



class admin : public first, public check, public auth, public date_sheet {
private:
	//admin credentials: 
	const string admin_username = "admin";
	const string admin_password = "123";

	//for File IO
	string student_name;
	string student_email;
	string student_class;
	int student_rollNO;



	int choice;
	bool isFound = 0;
	string Class;
	//int ret;


	string teacher_name;
	string teacher_email;
	int teach_Code;

public:

	void make_datesheet() {
		int k;
		do {
			//system("clear");
			cout << "\t\t\t----------Welcome admin----------- \n\n";
			cout << "\t\tMake Date sheet \n";
			cout << "Enter the class Name :";
			cin >> Class;

			ofstream date_sheet;
			date_sheet.open("bin/date_sheet.txt");
			if (!date_sheet) {
				cout << "File Not Found or permission denied.";
			}
			for (int i = 0; i < 5; i++) {
				cout << "For " << subject[i] << " : " << endl;
				cout << "Enter Date (DD-MM-YYYY) :\n";
				cout << "Enter Date : ";
				cin >> d;
				cout << "Enter Month: ";
				cin >> m;
				cout << "Enter Year: ";
				cin >> y;
				cout << "Enter Time";
				cout << "Enter Starting time : ";
				cin >> starting_time;
				cout << "Enter Ending Time : ";
				cin >> ending_time;

				date_sheet << subject[i] << " " << d << " " << m << " " << y << " " << starting_time << " " << ending_time << "\n";
			}
			cout << "Enter 1 to recover your datasheet or back\n";
			cin >> k;

		} while (k == 1);
	}


	void add_student() {
		int k;
		do {
			cout << "\t\tAdd Students \n";
			cout << "Enter Student Name: ";
			cin >> student_name;
			cout << "Enter student email: ";
			cin >> student_email;
			cout << "Enter student class: ";
			cin >> student_class;
			cout << "Enter student Roll No.: ";
			cin >> student_rollNO;

			ofstream Add_student;
			Add_student.open("bin/student.txt", ios::app);
			if (!Add_student) {
				cout << "File Not Found or permission denied.";
			}
			else {
				Add_student << student_name << " " << student_email << " " << student_class << " " << student_rollNO << "\n";
			}

			Add_student.close();

			cout << "Enter 1 to add another student else back" << endl;
			cout << "Enter your choice : " ;cin >> k;
		} while (k == 1);

	}
	// void view_student() {
	// 	fstream file;
	// 	file.open("bin/student.txt", ios:: in );


	// 	if (!file) {
	// 			cout << "File Not Found or permission denied.";

	// 	}

	// 	while (!file.eof()) {
	// 		file >> student_name >> student_email >> student_class >> student_rollNO;
	// 		cout << student_name << student_email << student_class << student_rollNO;
	// 	}

	// 	file.close();
	// }

	void add_teacher() {
		int k;
		do {
			system("clear");

			cout << "Enter Teacher Name: ";
			cin >> teacher_name;
			cout << "Enter Teacher email: ";
			cin >> teacher_email;
			cout << "Enter Teacher Subect: ";

			for (int i = 0; i <= 5; i++) {
				cout << "Press " << i << " For " << subject[i] << endl;
			}
			int ch;
			cin >> ch;

			cout << "Enter Teacher Code : ";
			cin >> teach_Code;

			ofstream teacher;
			teacher.open("bin/teacher.txt", ios::app);
			if (!teacher) {
				cout << "File Not Found Something went wrong Try again.";
			}
			else {
				teacher << teacher_name << " " << teacher_email << " " << subject[ch] << " " << teach_Code << "\n";
			}

			teacher.close();

			cout << "Enter 1 to add another teacher else back : " << endl;
			cout << "Enter your choice : " ;cin >> k;
		} while (k == 1);
	}


	void log() {
		auth::log();
		login(username, pass);

	}


	void login(string user, string pass) {
		int ret;

		do {
			//system("clear");
			if (user == admin_username && pass == admin_password) {
				cout << "Press\n1.For Add Student \n";
				cout << "2.For Add Teacher \n";
				cout << "3.To Make Date_Sheet \n";
				cout << "4.to Back to main menu\n";
				cin >> choice;
				switch (choice)
				{
				case 1:
					add_student();
					ret = 0;
					break;
				case 2:
					add_teacher();
					ret = 0;
					break;
				case 3:
					make_datesheet();
					ret = 0;
					break;
				case 4:
					menu();
				default:
					cout << "Invalid Choice Press 0 to Try Again else Exit..";
					cout << "Enter your choice : " ;cin >> ret;
					break;
				}
			}
			//new
			else{
				cout << "Wrong! Please retry or back home!\n";
				cout << "1. retry\n";
				cout << "2. back\n";
				int k;
				cout << "Enter your choice : " ;cin >> k;
				if(k == 1){
					ret = 0;
					cout << "Enter Username  : "; cin >> user;
					cout << "Enter Password : "; cin >> pass;
				}
				else{
					ret = 1;
				}
			}
		} while (ret == 0);



	}


};


class teacher :public auth, public check, public paper, public first, public date_sheet {
private:
	int choice;
	int usr;
	int check_roll;
	int ret = 0;
	int obtained_marks;

public:
	void log() {
		auth::log1();
		login(user, passw);
	}

	void login(int user, int pasw) {
		usr = user;

		if (check::check_teacher(user, pasw)) {
			do{
				//system("clear");
				cout << "WELCOME TEACHERS....." << endl;
				cout << "Press\n1.To Make paper \n";
				cout << "2.To Check paper \n";
				cout << "3.To  View DateSheet\n4.To back to main Menu \n";
				cin >> choice;
				switch (choice)
				{
				case 1:
					//system("clear");
					paper::make_paper();
					ret = 0;
					break;
				case 2:
					//system("clear");
					check_paper();
					ret = 0;
					break;
				case 3:
					//system("clear");
					date_sheet::view_datesheet();
					cout << "\nPress 0 to Go back :- "; cin >> ret;
					break;
				case 4:
					ret = 1;
					break;
				default:
					cout << "INVALID CHOICE";
					break;
				}
			}while(ret == 0);
		}
		else {
			cout << "Emp No. Not found Ask Admin to register You Or try again.\nPlease Enter 1 to try again or 0 to go back\n";
			int k;
			cout << "Enter your choice : " ;cin >> k;
			if(k == 1)
				log();
		}
	}

	void check_paper() {
		string n, e, s; int r;
		ifstream ans_sht, file, ques;
		ofstream res;
		string a, b;
		string temp_subject;
		file.open("bin/student.txt");
		res.open("result.txt", ios::app);
		if (!file) {
			cout << "Something went wrong Try again...\n";
			return;
		}
		string p = check::check_subject(usr);
		cout << "Check Paper of " << p << endl;
		cout << "Select Student To Check his/her Paper : " << endl;
		file >> n >> e >> s >> r;
		while (!file.eof()) {
			cout << "Name : " << n << ";  Roll Number : " << r << endl;
			file >> n >> e >> s >> r;
		}
		cout << "\nEnter Roll Number to Check : ";
		cin >> check_roll;
		int k = 0;
		do{
			if (check::check_student(check_roll, check_roll)) {
				for (int i = 0; i <= 5; i++) {
					if (p == subject[i]) {
						temp_subject = subject[i];
						ans_sht.open(Ans_sheet[i]);

						if (!ans_sht) {

							cout << "Something went wrong Try again...\n";
							return;
						}
						int j = 0;
						getline(ans_sht, a);
						while (getline(ans_sht, b)) {
							j++;
							//getline(ans_sht, b);
							cout << "Answer of " << j << " Question : " << endl << b << endl;
						}

						cout << "Enter The Total marks for this student : ";
						cin >> obtained_marks;
						res << temp_subject << " " << check_roll << " " << obtained_marks << "\n";


					}


				}
				cout << "The student " << check_roll <<"Total mark is " << obtained_marks << ", Please enter 1 to go back" << endl;
				cout << "Enter your choice : " ;cin >> k;
			}




			else {
				cout << "please enter correct roll no. Press 0 to try again or 1 to go back\n";
				//int k;
				cout << "Enter your choice : " ;cin >> k;
				if(k == 0){
					cout << "Enter Roll Number to Check : ";
					cin >> check_roll;
					cout << "\n";
				}
			}
		}while(k == 0);

	}


};


class student :public auth, public check, public date_sheet, public paper, public first {
private:
	int valid;
	int choice;
	char answer[256];
	int ret;

public:

	void log() {
		auth::log1();
		login(user, passw);
	}
	void give_paper() {
		cout << "Welcome Gave Your Paper " << endl;
		cout << "Select Subject : " << endl;
		for (int i = 0; i <= 4; i++) {
			cout << "Press " << i + 1 << " For " << subject[i] << endl;
		}
		int ch;
		cin >> ch;

		if (ch > 0 && ch < 7) {

			ifstream file;
			ofstream ans;
			file.open(file_of_papers[ch - 1]);
			ans.open(Ans_sheet[ch - 1], ios::app);
			string str;
			if (!file || !ans) {
				cout << "Something went wrong Try again..." << endl;
			}
			else {
				string q; string m;
				ans << valid << endl;
				cin.ignore();
				while (getline(file, q))
				{
					//getline(file, q);
					getline(file, m);
					cout << "Q : " << q << "\t\t\t Marks : " << m << endl;
					cout << "Ans : ";
					cin.getline(answer, 256);
					//cout << answer << endl;
					ans << answer << endl;
				}
				file.close();

			}



		}



	}


	void login(int user, int pasw) {
		valid = user;
		if (check::check_student(user, pasw) == 1) {
		//st_menu:
			do {

				//system("clear");
				cout << "WELCOME " << user << endl;
				cout << "Press\n1. To View Date_sheet \n";
				cout << "2. To Give Paper \n";
				cout << "3. To  View Reults\n";
				//cout << "4. To View Your Test Record\n";
				cout << "4. To Back\n";
				cin >> choice;
				switch (choice)
				{
				case 1:
					date_sheet::view_datesheet();
					char r;
					cout << "\nPress Any key to Go back :- "; cin >> r;
					ret = 1;
					//goto st_menu;
					break;
				case 2:
					give_paper();
					ret = 1;
					break;
				case 3:
					result();
					ret = 1;
					break;
				case 4:
					ret = 0;
					break;
				default:
					cout << "INVALID CHOICE";
					cout << "press 1 to try again";
					cout << "Enter your choice : " ;cin >> ret;
					break;
				}
			} while (ret == 1);
		}
		else {
			cout << "Roll No. Not found Ask Admin to register You Or try again.\nPress any Key to go back : ";
			char r;
			cin >> r;
			return;
		}


	}

	void result() {
		bool isf = 0;
		int choice;
		string sab;
		int rs, om;
		//system("clear");
		cout << "Select Subject to View your result : " << endl;
		for (int i = 0; i <= 4; i++) {
			cout << "Press " << i + 1 << " to " << subject[i] << endl;
		}
		cin >> choice;
		choice = choice - 1;
		if (choice >= 0 && choice < 5) {

			ifstream res;
			res.open("result.txt");
			res >> sab >> rs >> om;
			while (!res.eof()) {
				if (valid == rs && sab == subject[choice]) {
					cout << "Your Total MArks are : " << om << endl;
					isf = 1;
				}
				res >> sab >> rs >> om;
			}
			if (!isf) {
				cout << "\nPaper is not check Yet. \n";
				char r;
				cout << "Press Any key to go back : ";
				return;
			}
		}


	}

};


void menu() {
	first* obj;
	int choice;
	int ret;
mnu:
	do {
		//system("clear");
		cout << "==========\t\t\t\tEXAM PORTAL\t\t\t\t=========\nPress\n";

		cout << "1. For Admin" << endl;
		cout << "2. For Student" << endl;
		cout << "3. For Teacher" << endl;
		cout << "4. To Exit" << endl;
		cout << "Select : "; cin >> choice;
		switch (choice)
		{
			case 1:
				obj = new admin;
				obj->log();
				ret = 0;
				break;
			case 2: 
				obj = new student;
				obj->log();
				ret = 0;
				break;
			case 3:
				obj = new teacher;
				obj->log();
				ret = 0;
				break;
			case 4:
				cout << "\n\tThanks for Using//\n";
				exit(1);
			default:
				cout << "Invalid Choice Press 0 to Try Again else Exit..";
				cin >> ret;
				break;
		}
	} while (ret == 0);


}
int main() {

	menu();

}