//hospital database.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<iomanip.h>
#include<fstream.h>
struct date
{
 int d,m,y;
};
class records
{
 protected:
	char name[15],disease[50];
	struct date doa,dod;
	public:
	void display();
	void getdata();
};
void records::getdata()
{
 cout<<"Enter the name of the patient:";
 gets(name);
 cout<<"Enter the date of admission:";
 cin>>doa.d>>doa.m>>doa.y;
 cout<<"Enter the disease of patient:";
 gets(disease);
 cout<<"Enter the date of discharge:";
 cin>>dod.d>>dod.m>>dod.y;
}
void records::display()
{
 cout<<"\n\n\nName of the patient:\t";
 puts(name);
 cout<<"Date of admission:\t"<<doa.d<<"-"<<doa.m<<"-"<<doa.y<<endl;
 cout<<"Disease:\t\t";
 puts(disease);
 cout<<"Date of discharge:\t"<<dod.d<<"-"<<dod.m<<"-"<<dod.y<<endl;
}
class age:public records
{
 public:
	int age;
	void get()
	{
		getdata();
		cout<<"Enter the age:";
		cin>>age;
	}
	void show()
	{
		display();
		cout<<"Age:"<<age;
	}
};
void main()
{
 clrscr();
 records a;
 fstream file,fileage;
 age b;
 file.open("record.dat",ios::app|ios::in|ios::out);
 fileage.open("record1.dat",ios::app|ios::in|ios::out);
 while(1)
 {
	a.getdata();
	cout<<"Enter 1 to continue:";
	int flag=1;
	cin>>flag;
	file.write((char *) &a,sizeof(a));
	if(flag!=1)
	break;
	clrscr();
 }
 file.seekg(0);
 while(file.read((char *)&a,sizeof(a)))
 {
	a.display();
 }
 while(1)
 {
	b.get();
	cout<<"Enter 1 to continue:";
	int flag=1;
	fileage.write((char*) &b,sizeof(b));
	cin>>flag;
	if(flag!=1)
	break;
	clrscr();
 }
 fileage.seekg(0);
 while(fileage.read((char *)&b,sizeof(b)))
 {
	if(b.age<=12)
	b.show();
 }
 file.close();
 fileage.close();
 getch();
}