main.cpp

#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

//global variable for array sizes
int count[3];

//Base People class for students and lecturers
class People
{
	private:
		//People properties which are same for Student and Lecturer
		string number;
		string name;
		string surname;
		string department;
		string email;
		string phone;
	public:
		//get and set functions for Number, Name, Surname, Department, Email, Phone properties
		string getNumber()
		{
			return this->number;
		};
		void setNumber(string _number)
		{
			this->number = _number;
		};
		string getName()
		{
			return this->name;
		};
		void setName(string _name)
		{
			this->name = _name;	
		};
		string getSurname()
		{
			return this->surname;	
		};
		void setSurname(string _surname)
		{
			this->surname = _surname;	
		};
		string getDepartment()
		{
			return this->department;	
		};
		void setDepartment(string _department)
		{
			this->department = _department;	
		};
		string getEmail()
		{
			return this->email;	
		};
		void setEmail(string _email)
		{
			this->email = _email;	
		};
		string getPhone()
		{
			return this->phone;	
		};
		void setPhone(string _phone)
		{
			this->phone = _phone;	
		};
};

//inherit Student class from People class
class Student : public People
{
	private:
		//Student properties
		string year;
	public:
		//constructor
		Student(){};
		Student(string *_temp);
		//get and set functions for Year property
		string getYear()
		{
			return this->year;	
		};
		void setYear(string _year)
		{
			this->year = _year;	
		};
		//display students
		void display()
		{
			cout<<getNumber()<<" - ";
			cout<<getName()<<" - ";
			cout<<getSurname()<<" - ";
			cout<<getDepartment()<<" - ";
			cout<<getYear()<<" - ";
			cout<<getEmail()<<" - ";
			cout<<getPhone()<<endl;
		};
};

Student :: Student(string *_temp)
{
	//construct Student object using the line in the given file
	setNumber(_temp[0]);
	setName(_temp[1]);
	setSurname(_temp[2]);
	setDepartment(_temp[3]);
	setYear(_temp[4]);
	setEmail(_temp[5]);
	setPhone(_temp[6]);
};

//inherit Lecturer class from People class
class Lecturer : public People
{
	private:
		//Lecturer properties
		string chair;
	public:
		//constructor
		Lecturer(){};
		Lecturer(string *_temp);
		//get and set functions for Chair property
		string getChair()
		{
			return this->chair;	
		};
		void setChair(string _chair)
		{
			this->chair = _chair;	
		};
		//display lecturers
		void display()
		{
			cout<<getNumber()<<" - ";
			cout<<getName()<<" - ";
			cout<<getSurname()<<" - ";
			cout<<getDepartment()<<" - ";
			cout<<getEmail()<<" - ";
			cout<<getPhone()<<" - ";
			cout<<getChair()<<endl;	
		};
};

Lecturer :: Lecturer(string *_temp)
{
	//construct Lecturer object using the line in the given file
	setNumber(_temp[0]);
	setName(_temp[1]);
	setSurname(_temp[2]);
	setDepartment(_temp[3]);
	setEmail(_temp[4]);
	setPhone(_temp[5]);
	setChair(_temp[6]);
};

//composite Appointment class from Student and Lecturer classes
class Appointment
{
	private:
		//appointment properties
		string date;
		string start;
		string end;
	public:
		//composition
		Lecturer L;
		Student S;
		//constructor
		Appointment(){};
		Appointment(string *_temp);
		//get and set functions for Date, Start and End 
		string getDate()
		{
			return this->date;	
		};
		void setDate(string _date)
		{
			this->date = _date;	
		};
		string getStart()
		{
			return this->start;
		}
		void setStart(string _start)
		{
			this->start = _start;
		}
		string getEnd()
		{
			return this->end;
		}
		void setEnd(string _end)
		{
			this->end = _end;
		};
		//display appointments
		void display()
		{
			cout<<S.getNumber()<<" - ";
			cout<<L.getNumber()<<" - ";
			cout<<getDate()<<" - ";
			cout<<getStart()<<" - ";
			cout<<getEnd()<<endl;	
		};
};

Appointment :: Appointment(string *_temp)
{
	S.setNumber(_temp[0]);
	L.setNumber(_temp[1]);
	setDate(_temp[2]);
	setStart(_temp[3]);
	setEnd(_temp[4]);	
};

//set count array variables as the entries of the files, student-lecturer-appointment numbers respectively
void countFile(char *filename, int filenum)
{
	
	string temp;
	ifstream readFile;
	readFile.open(filename);
	while(getline(readFile, temp))
	{
		count[filenum]++;
	}
	readFile.close();
}

//read relevant information from the files
void readFromFile(Student _s[], Lecturer _l[], Appointment _a[], char *f1, char *f2, char *f3)
{	
	//read from ogrenci.txt
	string temp[10];
	int i=0, num=0, j=0;
	ifstream readFile(f1);
	if(readFile.is_open())
	{
		while(readFile>>temp[i])
		{
			i++;
			//control with 7, since each line contains 7 elements
			if(i==7)
			{
				//line is read, now create a Student object using the relevant information of this line
				Student s(temp);
				_s[num] = s;
				num++;
				i=0;
			}
		}	
	}
	readFile.close();
	
	//read from akademisyen.txt
	i=0;
	num=0;
	readFile.open(f2);
	if(readFile.is_open())
	{
		while(readFile>>temp[i])
		{
			i++;
			//control with 7, since each line contains 7 elements
			if(i==7)
			{
				//line is read, now create a Lecturer object using the relevant information of this line
				Lecturer l(temp);
				_l[num] = l;
				num++;
				i=0;
			}
		}
	}
	readFile.close();
	
	//read from randevu.txt
	bool control;
	i=0;
	num=0;
	readFile.open(f3);
	if(readFile.is_open())
	{
		while(readFile>>temp[i])
		{
			i++;
			//control with 5, since each line contains 5 elements
			if(i==5)
			{
				//line is read, now create a Appointment object using the relevant information of this line
				//if this is the first appointment, add it directly
				if(num==0)
				{
					Appointment a(temp);
					_a[num] = a;
					num++;
					i=0;
				}
				//if this is not the first appointment, control if any overlaps with the previous appointments
				else
				{
					for(j=0;j<num;j++)
					{
						//if overlap occurs, display an error message
						if(_a[j].getDate() == temp[2] && (_a[j].getStart() == temp[3] || _a[j].getEnd() == temp[4] ))
						{
							cout<<"Error. "<<temp[0]<<" between "<<temp[1]<<" appointment cannot be scheduled."<<endl;
							cout<<"This time period is full. "<<endl<<endl;	
							control = false;
							break;
						}
						//if not, keep going
						else control = true;
					}
					if(control)
					{
						Appointment a(temp);
						_a[num] = a;
						num++;
					}
					i=0;
				}
			}
		}
	}
	readFile.close();
}

int main(int argc, char **argv)
{
	if(argc<4)
	{
		cout<<"Give 3 file names to run the program."<<endl;
		return 0;
	}
	//init global array variables as zero
	count[0]=0;
	count[1]=0;
	count[2]=0;
	//get command line arguments for file names
	char *file1 = argv[1];
	char *file2 = argv[2];
	char *file3 = argv[3];
	//calculate array sizes
	countFile(file1, 0);
	countFile(file2, 1);
	countFile(file3, 2);
	//x is student size, y is lecturer size, z is appoinment size
	int x = count[0];
	int y = count[1];
	int z = count[2];
	//initiate arrays of objects
	Student _S[100];
	Lecturer _L[100];
	Appointment _A[100];
	//read information of students, lecturers and appointments from the given files (named ogrenci.txt, akademisyen.txt, randevu.txt respectively)
	readFromFile(_S, _L, _A, file1, file2, file3);
	
	//menu variables
	int menuLoop = 0;
	int menu=0;
	int i;
	
	while(menuLoop!=5)
	{
		//display main menu
		cout<<endl<<"Student - Lecturer Appointment System"<<endl<<endl;
		cout<<"Menu:"<<endl;
		cout<<"1 - Student Menu"<<endl;
		cout<<"2 - Lecturer Menu"<<endl;
		cout<<"3 - Appointment Menu"<<endl;
		cout<<"4 - Get Final Lists"<<endl;
		cout<<"5 - Exit"<<endl;
		cin>>menuLoop;
		
		//display detailed menu
		if(menuLoop==1)
		{
			//student menu is chosen
			cout<<"1 - Add Student"<<endl;
			cout<<"2 - List Students"<<endl;
			cout<<"3 - Remove Student"<<endl;
			cout<<"4 - Update Student"<<endl;
			cin>>menu;
			
			if(menu==1)
			{
				//student addition is chosen
				string temp_;
				Student newS;
				cout<<"Student No:"<<endl;
				cin>>temp_;
				newS.setNumber(temp_);
				cout<<"Student Name:"<<endl;
				cin>>temp_;
				newS.setName(temp_);
				cout<<"Student Last Name:"<<endl;
				cin>>temp_;
				newS.setSurname(temp_);
				cout<<"Student Department:"<<endl;
				cin>>temp_;
				newS.setDepartment(temp_);
				cout<<"Student Starting Year:"<<endl;
				cin>>temp_;
				newS.setYear(temp_);
				cout<<"Student E-Mail:"<<endl;
				cin>>temp_;
				newS.setEmail(temp_);
				cout<<"Student Phone Number:"<<endl;
				cin>>temp_;
				newS.setPhone(temp_);
				
				_S[x] = newS; 
				x++;
			}
			else if(menu==2)
			{
				//student display is chosen
				cout<<endl;
				for(i=0; i<x; i++)
				{
					_S[i].display();
				}
			}
			else if(menu==3)
			{
				//student deletion is chosen
				string temp_;
				int deleted;
				cout<<"Enter the Student No to remove:"<<endl;
				cin>>temp_;
				i=0;
				while(i<x)
				{
					if(_S[i].getNumber()==temp_) deleted = i;
					i++;
				}
				for(i=deleted; i<x; i++)
				{
					_S[i] = _S[i+1];
				}
			}
			else if(menu==4)
			{
				//student update is chosen
				string temp_;
				int updated;
				cout<<"Enter the Student No to update:"<<endl;
				cin>>temp_;
				i=0;
				while(i<x)
				{
					if(_S[i].getNumber()==temp_) updated = i;
					i++;
				}
				cout<<"Updated Student Name:"<<endl;
				cin>>temp_;
				_S[updated].setName(temp_);
				cout<<"Updated Student Last Name:"<<endl;
				cin>>temp_;
				_S[updated].setSurname(temp_);
				cout<<"Updated Student Department:"<<endl;
				cin>>temp_;
				_S[updated].setDepartment(temp_);
				cout<<"Updated Student Starting Year:"<<endl;
				cin>>temp_;
				_S[updated].setYear(temp_);
				cout<<"Updated Student E-Mail:"<<endl;
				cin>>temp_;
				_S[updated].setEmail(temp_);
				cout<<"Updated Student Phone Number:"<<endl;
				cin>>temp_;
				_S[updated].setPhone(temp_);
			}
			else
			{
			cout<<"Error."<<endl;
			}
		}
		else if(menuLoop==2)
		{
			//lecturer menu is chosen
			cout<<"1 - Add Lecturer"<<endl;
			cout<<"2 - List Lecturers"<<endl;
			cout<<"3 - Remove Lecturer"<<endl;
			cout<<"4 - Update Lecturer"<<endl;
			cin>>menu;
			
			if(menu==1)
			{
				//lecturer addition is chosen
				string temp_;
				Lecturer newL;
				cout<<"Lecturer No:"<<endl;
				cin>>temp_;
				newL.setNumber(temp_);
				cout<<"Lecturer Name:"<<endl;
				cin>>temp_;
				newL.setName(temp_);
				cout<<"Lecturer Last Name:"<<endl;
				cin>>temp_;
				newL.setSurname(temp_);
				cout<<"Lecturer Department:"<<endl;
				cin>>temp_;
				newL.setDepartment(temp_);
				cout<<"Lecturer E-Mail:"<<endl;
				cin>>temp_;
				newL.setEmail(temp_);
				cout<<"Lecturer Phone Number:"<<endl;
				cin>>temp_;
				newL.setPhone(temp_);
				cout<<"Lecturer Title:"<<endl;
				cin>>temp_;
				newL.setChair(temp_);
				
				_L[y] = newL; 
				y++;
				
			}
			else if(menu==2)
			{
				//lecturer display is chosen
				cout<<endl;
				for(i=0; i<y; i++)
				{
					_L[i].display();
				}
				
			}
			else if(menu==3)
			{
				//lecturer deletion is chosen
				string temp_;
				int deleted;
				cout<<"Enter the Lecturer No to remove:"<<endl;
				cin>>temp_;
				i=0;
				while(i<y)
				{
					if(_L[i].getNumber()==temp_) deleted = i;
					i++;
				}
				for(i=deleted; i<y; i++)
				{
					_L[i] = _L[i+1];
				}
			}
			else if(menu==4)
			{
				//lecturer update is chosen
				string temp_;
				int updated;
				cout<<"Enter the Lecturer No to update:"<<endl;
				cin>>temp_;
				i=0;
				while(i<y)
				{
					if(_L[i].getNumber()==temp_) updated = i;
					i++;
				}
				cout<<"Updated Lecturer Name:"<<endl;
				cin>>temp_;
				_L[updated].setName(temp_);
				cout<<"Updated Lecturer Last Name:"<<endl;
				cin>>temp_;
				_L[updated].setSurname(temp_);
				cout<<"Updated Lecturer Department:"<<endl;
				cin>>temp_;
				_L[updated].setDepartment(temp_);
				cout<<"Updated Lecturer E-Mail:"<<endl;
				cin>>temp_;
				_L[updated].setEmail(temp_);
				cout<<"Updated Lecturer Phone Number:"<<endl;
				cin>>temp_;
				_L[updated].setPhone(temp_);
				cout<<"Updated Lecturer title:"<<endl;
				cin>>temp_;
				_L[updated].setChair(temp_);
			}
			else
			{
			cout<<"Error."<<endl;
			}
		}
		else if(menuLoop==3)
		{
			//appointment menu is chosen
			cout<<"1 - Add Appointment"<<endl;
			cout<<"2 - List Appointments"<<endl;
			cout<<"3 - Remove Appointment"<<endl;
			cout<<"4 - Update Appointment"<<endl;
			cin>>menu;
			
			if(menu==1)
			{
				//appointment addition is chosen
				string temp_;
				Appointment newA;
				cout<<"Student No:"<<endl;
				cin>>temp_;
				newA.S.setNumber(temp_);
				cout<<"Lecturer No:"<<endl;
				cin>>temp_;
				newA.L.setNumber(temp_);
				cout<<"Appointment Date:"<<endl;
				cin>>temp_;
				newA.setDate(temp_);
				cout<<"Starting Hour:"<<endl;
				cin>>temp_;
				newA.setStart(temp_);
				cout<<"Ending Hour:"<<endl;
				cin>>temp_;
				newA.setEnd(temp_);
				
				_A[z] = newA; 
				z++;
				
			}
			else if(menu==2)
			{
				//appointment display is chosen
				cout<<endl;
				for(i=0; i<z; i++)
				{
					_A[i].display();
				}
				
			}
			else if(menu==3)
			{
				//appointment deletion is chosen
				string temp_, temp_2;
				int deleted;
				cout<<"Enter the Student No to remove:"<<endl;
				cin>>temp_;
				cout<<"Enter the Lecturer No to remove:"<<endl;
				cin>>temp_2;
				i=0;
				while(i<z)
				{
					if(_A[i].S.getNumber()==temp_ && _A[i].L.getNumber()==temp_2) deleted = i;
					i++;
				}
				for(i=deleted; i<z; i++)
				{
					_A[i] = _A[i+1];
				}
			}
			else if(menu==4)
			{
				//appointment update is chosen
				string temp_, temp_2;
				int updated;
				cout<<"Enter the Student No to update:"<<endl;
				cin>>temp_;
				cout<<"Enter the Lecturer No to update:"<<endl;
				cin>>temp_2;
				i=0;
				while(i<z)
				{
					if(_A[i].S.getNumber()==temp_ && _A[i].L.getNumber()==temp_2) updated = i;
					i++;
				}
				cout<<"Updated Appointment Date:"<<endl;
				cin>>temp_;
				_A[updated].setDate(temp_);
				cout<<"Updated Starting Hour:"<<endl;
				cin>>temp_;
				_A[updated].setStart(temp_);
				cout<<"Updated Ending Hour:"<<endl;
				cin>>temp_;
				_A[updated].setEnd(temp_);
			}
			else
			{
			cout<<"Error."<<endl;
			}
		}
		else if(menuLoop==4)
		{
			//write to file is chosen
			ofstream writeToFile;
			//updated student file is writing
			writeToFile.open("Guncelogrenci.txt");
			for(i=0;i<x;i++)
			{
				writeToFile<<_S[i].getNumber()<<" "<<_S[i].getName()<<" "<<_S[i].getSurname()<<" "<<_S[i].getDepartment()<<" "<<_S[i].getYear()<<" "<<_S[i].getEmail()<<" "<<_S[i].getPhone()<<endl;
			}
			writeToFile.close();
			//updated lecturer file is writing
			writeToFile.open("Guncelakademisyen.txt");
			for(i=0;i<y;i++)
			{
				writeToFile<<_L[i].getNumber()<<" "<<_L[i].getName()<<" "<<_S[i].getSurname()<<" "<<_L[i].getDepartment()<<" "<<_L[i].getEmail()<<" "<<_L[i].getPhone()<<" "<<_L[i].getChair()<<endl;
			}
			writeToFile.close();
			//updated appointment file is writing
			writeToFile.open("Guncelrandevu.txt");
			for(i=0;i<z;i++)
			{
				writeToFile<<_A[i].S.getNumber()<<" "<<_A[i].L.getNumber()<<" "<<_A[i].getDate()<<" "<<_A[i].getStart()<<" "<<_A[i].getEnd()<<endl;
			}
		}
		else if(menuLoop==5)
		{
			cout<<"Program terminated."<<endl;
			return 0;
		}
		else
		{
			cout<<"Error."<<endl;
		}
	}
	
	return 0;
}