CS Project

#include<fstream.h>
#include<conio.h>
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
#include<iomanip.h>
#include<ctype.h>
class practical
{
	int adno;
	char name[100];
	char projname[100];
	float projmark;
	float vivamark;
	float progmark;
	float assignmark;
	float totmark;
	public:
	void input()
	{
		cout<<"\n\t\t\tEnter Admission Number: ";
		cin>>adno;
		cout<<"\t\t\tEnter Name of Student: ";
		gets(name);
		cout<<"\t\t\tEnter Name of Project: ";
		gets(projname);
		cout<<"\t\t\tEnter Marks obtained in VIVA: ";
		cin>>vivamark;
		cout<<"\t\t\tEnter Marks obtained from Project: ";
		cin>>projmark;
		cout<<"\t\t\tEnter Marks obtained from Program: ";
		cin>>progmark;
		cout<<"\t\t\tEnter Marks obtained from Assignment: ";
		cin>>assignmark;
		totmark=vivamark+projmark+progmark+assignmark;
	}
	void output()
	{
		cout<<setw(5)<<adno<<setw(10)<<name<<setw(15)<<projname<<setw(10)<<vivamark<<setw(10)<<projmark<<setw(10)<<progmark<<setw(10)<<assignmark<<setw(10)<<totmark<<endl;
	}
	int getad()
	{
		return adno;
	}
	char* getname()
	{
		return name;
	}
	char* getproj()
	{
		return projname;
	}
	float getviva()
	{
		return vivamark;
	}
	float getprojmk()
	{
		return projmark;
	}
	float getprogmk()
	{
		return progmark;
	}
	float getassign()
	{
		return assignmark;
	}
	float gettotal()
	{
		return totmark;
	}
	void modify()
	{
		cout<<"\t\t\tEnter Name of Student: ";
		gets(name);
		cout<<"\t\t\tEnter Name of Project: ";
		gets(projname);
		cout<<"\t\t\tEnter Marks obtained in VIVA: ";
		cin>>vivamark;
		cout<<"\t\t\tEnter Marks obtained from Project: ";
		cin>>projmark;
		cout<<"\t\t\tEnter Marks obtained from Program: ";
		cin>>progmark;
		cout<<"\t\t\tEnter Marks obtained from Assignment: ";
		cin>>assignmark;
		totmark=vivamark+projmark+progmark+assignmark;
	}
};
void header()
{
clrscr();
cout<<"********************************  Display Details  *****************************\n";
cout<<"\n"<<setw(5)<<"Ad NO"<<setw(10)<<"Name"<<setw(15)<<"Proj.Name"<<setw(10)<<"VivaMark"<<setw(10)<<"Proj.Mark"<<setw(10)<<"Prog.Mark"<<setw(10)<<"Ass.Mark"<<setw(10)<<"Tot.Mark"<<endl;
}

void addrec()
{
	clrscr();
	fstream f1;
	f1.open("practical.dat",ios::app|ios::binary);
	practical p1;
	p1.input();
	f1.write((char*)&p1,sizeof(p1));
	f1.close();
}
void disprec()
{
	clrscr();
	fstream f1;
	f1.open("practical.dat",ios::in|ios::binary);
	practical p1;
	header();
	if(f1==NULL)
		cout<<"Error in Loading"<<endl;
	else
	{
		int x=0;
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			p1.output();
			x++;
		}
		cout<<"\n\n\n\t\t\tTotal Number of Students: "<<x<<endl;
	}
	f1.close();
}
void sadno()
{
	clrscr();
	fstream f1;
	practical p1;
	f1.open("practical.dat",ios::in|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int a,x=0;
		cout<<"\t\t\tEnter Admission Number to search for: ";
		cin>>a;
		header();
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(p1.getad()==a)
			{
				p1.output();
				x=1;
			}
		}
		if(x==0)
			cout<<"\n\n\n\t\t\tAdmission Number does not exist"<<endl;
	}
	f1.close();
}
void sname()
{
	clrscr();
	fstream f1;
	practical p1;
	f1.open("practical.dat",ios::in|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int x=0;
		char name[100];
		cout<<"\t\t\tEnter Name to search for: ";
		gets(name);
		header();
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(strcmpi(p1.getname(),name)==0)
			{
				p1.output();
				x=1;
			}
		}
		if(x==0)
			cout<<"\n\n\t\t\tName does not exist"<<endl;
	}
	f1.close();
}

void sproj()
{
	clrscr();
	fstream f1;
	practical p1;
	f1.open("practical.dat",ios::in|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int x=0;
		char proj[100];
		cout<<"\t\t\tEnter Project Name to search for: ";
		gets(proj);
		header();
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(strcmpi(p1.getproj(),proj)==0)
			{
				p1.output();
				x=1;
			}
		}
		if(x==0)
			cout<<"\n\n\t\t\tProject Name  does not exist"<<endl;
	}
	f1.close();
}
void rangemark()
{
	clrscr();
	fstream f1;
	practical p1;
	f1.open("practical.dat",ios::in|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int x=0;
		int minmk,maxmk;
		cout<<"\t\t\tEnter Minimum Mark: ";
		cin>>minmk;
		cout<<"\t\t\tEnter Maximum Mark: ";
		cin>>maxmk;
		header();
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(p1.gettotal()>=minmk && p1.gettotal()<=maxmk)
			{
				p1.output();
				++x;
			}
		}
		if(x==0)
			cout<<"\n\n\t\t\tNo Student in Range"<<endl;
		else
			cout<<"\n\n\t\t\t"<<x<<" is the no. of Students who secured within "<<minmk<<" - "<<maxmk<<endl;
	}

	f1.close();
}
void topper_lower()
{
	clrscr();
	fstream f1;
	practical p1,min,max;
	f1.open("practical.dat",ios::in|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{

		f1.read((char*)&p1,sizeof(p1))   ;
		min=max=p1;
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(p1.gettotal()>max.gettotal())
			{
				max=p1;
			}
			if(p1.gettotal()<min.gettotal())
			{
				min=p1;
			}
		}
		cout<<"\n\n\t\t\tHighest Scorer: "<<endl;
		header();
		max.output();
		cout<<"\n\n\n\n\t\t\tLowest Scorer: "<<endl;
		header();
		min.output();
	}

	f1.close();
}
void fail()
{
	clrscr();
	fstream f1;
	practical p1;
	f1.open("practical.dat",ios::in|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int x=0;
		header();
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(p1.gettotal()<=10)
			{
				p1.output();
				++x;
			}
		}
		if(x==0)
			cout<<"\n\n\t\t\tNo Student Failed"<<endl;
		else
			cout<<"\n\n\t\t\t"<<x<<" number of Students failed"<<endl;
	}
	f1.close();
}
void removerec()
{
	clrscr();
	fstream f1,f2;
	practical p1;
	f1.open("practical.dat",ios::in|ios::binary);
	f2.open("temp.dat",ios::out|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int a,x=0;
		cout<<"\t\t\tEnter Admission Number to Delete: ";
		cin>>a;
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(p1.getad()!=a)
			{
				f2.write((char *)&p1,sizeof(p1));

			}
			else
			{
				clrscr();
				char ch;
				x=1;
				header();
				p1.output();
				cout<<"\n\n\t\t\tConfirm Delete (Y/N): ";
				cin>>ch;
				if(ch!='y'&&ch!='Y')
				{
					f2.write((char *)&p1,sizeof(p1));
					cout<<"\n\n\t\t\tRecord Not Deleted ";
				}
				else
					cout<<"\n\n\t\t\tRecord Deleted ";
			}
		}
		if(x==0)
			cout<<"\n\n\t\t\tAdmission Number does not exist."<<endl;
		f1.close();
		f2.close();
		remove("practical.dat");
		rename("temp.dat","practical.dat");
	}
	f1.close();
}
void modifyrec()
{
	clrscr();
	fstream f1;
	practical p1;
	f1.open("practical.dat",ios::in|ios::out|ios::binary);
	if(f1==NULL)
		cout<<"\t\t\tError in Loading"<<endl;
	else
	{
		int a,x=0,pos;
		cout<<"\t\t\tEnter Admission Number for Edit : ";
		cin>>a;
		while(f1.read((char*)&p1,sizeof(p1)))
		{
			if(p1.getad()==a)
			{
			       cout<<"\n\t\t\tDetails of "<<a<<"  are follows "<<endl;
			       header();
			       p1.output();
			       cout<<"\n\t\t\tEnter new value for "<<endl;
			       p1.modify();
			       pos=f1.tellp();
			       f1.seekp(pos-sizeof(p1));
			       f1.write((char *)&p1,sizeof(p1));
			       x=1;
			}
		}

		if(x==0)
			cout<<"\n\n\t\t\tAdmission Number does not exist"<<endl;
	}
	f1.close();
}
void mainmenu()
{
    clrscr();
    int a;

	clrscr();
	do
	{
		clrscr();
		cout<<endl<<endl<<endl<<endl<<endl<<endl<<"\t\t";
		for(int i=1;i<50;i++)
			cout<<"*";
		cout<<endl;
		cout<<"\t\t*\t1-Add Record\t\t\t\t*"<<endl;
		cout<<"\t\t*\t2-Display Record\t\t\t*"<<endl;
		cout<<"\t\t*\t3-Search by Admission Number\t\t*"<<endl;
		cout<<"\t\t*\t4-Search by Student Name\t\t*"<<endl;
		cout<<"\t\t*\t5-Search by Project Name\t\t*"<<endl;
		cout<<"\t\t*\t6-Search by Mark Range\t\t\t*"<<endl;
		cout<<"\t\t*\t7-Display Highest & Lowest Records\t*"<<endl;
		cout<<"\t\t*\t8-Display Records of Failed Students\t*"<<endl;
		cout<<"\t\t*\t9-Delete Record\t\t\t\t*"<<endl;
		cout<<"\t\t*\t10-Modify Record\t\t\t*"<<endl;
		cout<<"\t\t";
		for(i=1;i<50;i++)
			cout<<"*";
		cout<<endl;

		cout<<"\t\t\t\tEnter your option:\n\t\t\t\t";
		cin>>a;
		switch(a)
		{
			case 1:
				addrec();
				break;
			case 2:
				header();
				disprec();
				break;
			case 3:
				sadno();
				break;
			case 4:
				sname();
				break;
			case 5:
				sproj();
				break;
			case 6:
				rangemark();
				break;
			case 7:
				topper_lower();
				break;
			case 8:
				fail();
				break;
			case 9:
				removerec();
				break;
			case 10:
				modifyrec();
				break;
			case 0:
				cout<<"\n\t\t\t\tThank You.";
				getch();
				exit(0);

		}
		cout<<"\n\n\t\t\tPress any key to continue ";
		getch();
	}while(a!=0);


}
char *getpass()
{
	char pass[200],ch;
	int i=0;
	ch=getch();
	while(ch!=13)
	{
		cout<<"*";
		pass[i++]=ch;
		ch=getch();
	}
	pass[i]=NULL;
	return pass;
}
class login
{
	int id;
	char name[100],pass[100];
	public:
	int registration(int);
	void show();
	void change();
	int retid()
	{
		return id;
	}
	char *retpass()
	{
		return pass;
	}
};
int lastid()
{
	int x=0;
	login l1;
	fstream f1("login.dat",ios::in|ios::binary);
	if(f1!=NULL)
	{
		while(f1.read((char *)&l1,sizeof(l1)))
		{
			x=l1.retid();
		}
	}
	return x+1;
}
int login::registration(int x)
{
	clrscr();
	int f=0;
	id=x;
	char p1[100],p2[100];
	cout<<"\n\n\n\n\n\t\t\tEnter Username:";
	cin>>name;
	cout<<"\n\n\n\t\t\tEnter Password:";
	strcpy(p1,getpass());
	cout<<"\n\n\n\n\t\t\tConfirm Password:";
	strcpy(p2,getpass());
	if(strcmp(p1,p2)==0)
	{
		f=1;
		strcpy(pass,p1);
		clrscr();
		cout<<"\n\n\n\n\n\n\n\t\t\tLogin ID:"<<id<<endl<<"\t\t\tUsername:"<<name<<endl;
	}
	else
	{
		clrscr();
		cout<<"\n\n\n\tInvalid Password ";
	}
	return f;
}
void login::show()
{
	clrscr();
	cout<<"\n\n\t\t\tID:"<<id;
	cout<<"\n\t\t\tUserName:"<<name;
	cout<<"\n\t\t\tPassword:"<<pass<<endl;
}
void login::change()
{
	clrscr();
	cout<<"\n\n\t\t\tUsername:"<<name<<"\n\t\t\tEnter New Name:";
	cin>>name;
	cout<<"\n\t\t\tPassword:"<<pass<<"\n\t\t\tEnter New Password:";
	strcpy(pass,getpass());
}
void addlogin()
{
	clrscr();
	fstream f1;
	f1.open("login.dat",ios::app|ios::binary);
	login l1;
	if(l1.registration(lastid())==1)
	{
		f1.write((char *)&l1,sizeof(l1));
	}
	f1.close();
}
void displaylogin()
{
	clrscr();
	fstream f1;
	int id,x=0;
	char pass[100];
	f1.open("login.dat",ios::in|ios::binary);
	login l1;
	cout<<"\n\n\n\n\t\t\tEnter ID:";
	cin>>id;
	cout<<"\n\n\n\t\t\tEnter Password:";
	strcpy(pass,getpass());
	while(f1.read((char *)&l1,sizeof(l1)))
	{
		if(l1.retid()==id && strcmp(l1.retpass(),pass)==0)
		{
			l1.show();
			cout<<"\n\n\n\n\n\n\t\t\tPress any key for Main Menu ";
			getch();
			mainmenu();
			x=1;
		}
	}
	if(x==0)
	{
		clrscr();
		cout<<"\n\n\n\n\t\t\tInvalid Id  ";
	}
	f1.close();
}
void modifylogin()
{
	clrscr();
	fstream f1;
	int id,x=0;
	char pass[100];
	f1.open("login.dat",ios::in|ios::out|ios::binary);
	login l1;
	cout<<"\n\n\n\n\t\t\tEnter ID:";
	cin>>id;
	cout<<"\n\n\n\t\t\tEnter Password:";
	strcpy(pass,getpass());
	while(f1.read((char *)&l1,sizeof(l1)))
	{
		if(l1.retid()==id && strcmp(l1.retpass(),pass)==0)
		{
			l1.change();
			f1.seekp(f1.tellp()-sizeof(l1));
			f1.write((char *)&l1,sizeof(l1));
			x=1;
		}
	}
	if(x==0)
		cout<<"\n\t\t\tInvalid Id  ";
	f1.close();
}
void deletelogin()
{
	clrscr();
	fstream f1,f2;
	login l1;
	char pass[100];
	f1.open("login.dat",ios::in|ios::binary);
	f2.open("temp.dat",ios::out|ios::binary);
	if(f1==NULL)
		cout<<"Error in Loading"<<endl;
	else
	{
		int a,x=0;
		cout<<"\n\t\t\tEnter Login ID for Deletion:";
		cin>>a;
		cout<<"\n\t\t\tEnter Password:";
		cin>>pass;
		while(f1.read((char*)&l1,sizeof(l1)))
		{
			if(l1.retid()!=a && strcmp(l1.retpass(),pass)!=0)
			{
				f2.write((char *)&l1,sizeof(l1));

			}
			else
			{
				clrscr();
				char ch;
				x=1;

				l1.show();
				cout<<"\n\n\t\t\tConfirm Delete (Y/N): ";
				cin>>ch;
				if(ch!='y'&&ch!='Y')
				{
					f2.write((char *)&l1,sizeof(l1));
					cout<<"\n\n\t\t\tRecord Not Deleted";
				}
				else
					cout<<"\n\n\t\t\tRecord Deleted";
			}
		}
		if(x==0)
			cout<<"\n\n\t\t\tID does not exist."<<endl;
		f1.close();
		f2.close();
		remove("login.dat");
		rename("temp.dat","login.dat");
	}
	f1.close();
}

void main()
{

	int a;
	clrscr();
	do
	{
		clrscr();
		cout<<endl<<endl<<endl<<endl<<endl<<endl<<"\t\t";
		for(int i=1;i<50;i++)
			cout<<"*";
		cout<<endl;
		cout<<"\t\t*\t\t1-New User\t\t\t*"<<endl;
		cout<<"\t\t*\t\t2-Log In\t\t\t*"<<endl;
		cout<<"\t\t*\t\t3-Modify User\t\t\t*"<<endl;
		cout<<"\t\t*\t\t4-Delete User\t\t\t*"<<endl;
		cout<<"\t\t*\t\t0-Exit\t\t\t\t*"<<endl;
		cout<<"\t\t";
		for(i=1;i<50;i++)
			cout<<"*";
		cout<<endl;

		cout<<"\t\t\t\tEnter your option:\n\t\t\t\t";
		cin>>a;
		switch(a)
		{
			case 1:
				addlogin();
				break;
			case 2:
				displaylogin();
				break;
			case 3:
				modifylogin();
				break;
			case 4:
				deletelogin();
				break;
			case 0:
				cout<<"\n\t\t\t\tThank You.";
				getch();
				exit(0);

		}
		cout<<"\n\n\n\n\t\t\tPress any key to continue ";
		getch();
	}while(a!=0);
getch();
}