Hosptal database management system

/ HOSPITAL MANAGEMENT*/
#include<iostream.h>
#include<conio.h>
#include<process.h>
class all
{
 private:
 struct address
 {
  int house;
  char street[30];
  char city[30];
  char state[30];
  char country[30];
 };
 struct age
 {
  int day;
  int month;
  int year;
 };
 struct patient_info
 {
  char name[50];
  address AD1;  //nested structure implemented
  age A1;    //nested structure inplemented
  int martial_status;
  int reg_no;
  int bld_group;
  int sex;
 }PI[100];
 int task;
 protected:
 void enter_patient_info();
 void show_patient_detail();
 public:
 void software_detail();
 void tasks();
 char answer;
 char answer1;
 char ch;
 int serial;
};
class date
{
 private:
 	int date;
  int month;
  int year;
 public:
  void enter_date();
  void show_date();
};
class dob
{
 private:
 struct dob1
 {
  int date;
  int month;
  int year;
  int rem;
 }DOB11[100];
 public:
  void enter_date();
  void show_date();
};
int i=0;
int rem;
int count;
int regis;
int attempt;
int temp;
int show_count=0;
all A1;      //object declared
date D1;     //object declared
dob DOB1;     //object declared
void main()
{
 count=0;
 cout<<"Welcome to..."<<"
";
 cout<<"
			***HOSPITAL MANAGEMENT SOFTWARE***"<<"
";
 cout<<"			    By Bimal Kumar Barik    "<<"
";
 D1.enter_date();
 A1.tasks();
}
void all::tasks()
{
 attempt=0;
 D1.show_date();
 cout<<"
			***HOSPITAL MANAGEMENT SOFTWARE***"<<"
";
 cout<<"			    By Bimal Kumar Barik    "<<"
";
 cout<<"
			  **Hospital Management Tasks**"<<"
";
 cout<<"			  *****************************"<<"
";
 cout<<"

Please select a task to do...."<<"
";
 cout<<"
1. Enter a new patient information ."<<"
";
 cout<<"2. View detail of existing patient ."<<"
";
 cout<<"3. View detail about the program ."<<"
";
 cout<<"4. Exit from the program ."<<"
";
 //other function remain
 cout<<"
Enter your task serail :"<<"
";
 cin>>task;
 switch(task)
 {
 case 1:{
     A1.enter_patient_info();
     break;
     }
 case 2:{
     A1.show_patient_detail();
     break;
     }
 case 3:{
     A1.software_detail();
     break;
     }
 case 4:{
     clrscr();
     cout<<"

	Thank You for trying this program !!!"<<"
";
     cout<<"	This is the end of program...."<<"
";
     cout<<"
	Press any key to exit....."<<"
";
     getch();
     exit(0);
     break;
     }
 default:{
     clrscr();
     cout<<"
Invalid task serial ."<<"
";
     cout<<"Press any key to continue...."<<"
";
     getch();
     clrscr();
     A1.tasks();
     }
 }
}
void all::enter_patient_info()
{
 clrscr();
 answer='y';
 if(count==0)
 {
 serial=1;
 }
 else
 {
 i=serial;
 }
 for(i=serial;answer=='y'||answer=='Y';i++)
 {
 PI[i].reg_no=i;
 temp=serial;
 cout<<"
	 ***ENTERING INFORMATION FOR PATIENT SERIAL NUMBER "<<i<<"***"<<"
";
 cin.get(ch);
 cout<<"
Registration Number : "<<PI[i].reg_no<<"
";
 cout<<"Enter the name of patient :"<<"
";
 clreol();
 cin.getline(PI[i].name,50);
 cout<<"Sex (1-Male 2-Female) :"<<"
";
 clreol();
 cin>>PI[i].sex;
 while(PI[i].sex!=1&&PI[i].sex!=2)
 {
  cout<<"Invalid input for sex of patient!!!"<<"
";
  cout<<"Sex :"<<"
";
  clreol();
  cin>>PI[i].sex;
 }
 cout<<"
***ENTERING ADDRESS**"<<"
";
 cout<<"House number :"<<"
";
 clreol();
 cin>>PI[i].AD1.house;
 while(PI[i].AD1.house<=0)
 {
  cout<<"Invalid input for house number ."<<"
";
  cout<<"Again enter the house number ."<<"
";
  clreol();
  cin>>PI[i].AD1.house;
 }
 cin.get(ch);
 cout<<"Street :"<<"
";
 clreol();
 cin.getline(PI[i].AD1.street,30);
 cout<<"City :"<<"
";
 clreol();
 cin.getline(PI[i].AD1.city,30);
 cout<<"State :"<<"
";
 clreol();
 cin.getline(PI[i].AD1.state,30);
 cout<<"Country :"<<"
";
 clreol();
 cin.getline(PI[i].AD1.country,30);
 DOB1.enter_date();
 //to calculate age
 cin.get(ch);
 cout<<"Martial status(1-Married,2-Not Married ):"<<"
";
 if(count!=0)
 {
  clreol();
 }
 cin>>PI[i].martial_status;
 while(PI[i].martial_status<1||PI[i].martial_status>2)
 {
  cout<<"Invalid input for martial status ."<<"
";
  cout<<"Enter a valid martial status :"<<"
";
  clreol();
  cin>>PI[i].martial_status;
 }
 cin.get(ch);
 if(count!=0)
 {
  clreol();
 }
 clreol();
 cout<<"Blood group :"<<"
";
 clreol();
 cout<<"1. A+ "<<"
";
 clreol();
 cout<<"2. A- "<<"
";
 clreol();
 cout<<"3. B+ "<<"
";
 clreol();
 cout<<"4. B- "<<"
";
 clreol();
 cout<<"5. AB+ "<<"
";
 clreol();
 cout<<"6. AB- "<<"
";
 clreol();
 cout<<"7. O+ "<<"
";
 clreol();
 cout<<"8. O- "<<"
";
 clreol();
 cout<<"Enter :"<<"
";
 clreol();
 cin>>PI[i].bld_group;
 switch(PI[i].bld_group)
 {
  case 1:
  case 2:
  case 3:
  case 4:
  case 5:
  case 6:
  case 7:
  case 8:{
      break;
     }
 default:{
while(PI[i].bld_group!=1&&PI[i].bld_group!=2&&PI[i].bld_group!=3&&
PI[i].bld_group!=4&&PI[i].bld_group!=5&&PI[i].bld_group!=6&&
         PI[i].bld_group!=7&&PI[i].bld_group!=8)
      {
      clreol();
      cout<<"Invalid input !"<<"
";
      cout<<"Blood Group :"<<"
";
      clreol();
      cin>>PI[i].bld_group;
      }
      break;
     }
 }
 cin.get(ch);
 cout<<"
Want to enter information for another patient ? "<<"
";
 clreol();
 cin>>answer;
 count++;
 serial++;
 }
 clrscr();
 A1.tasks();
}
void dob::enter_date()
{
 clreol();
 cout<<"
Date of birth"<<"
";
 clreol();
 cout<<"
Year :";
 clreol();
 clreol();
 cin>>DOB11[temp].year;
 if(DOB11[temp].year<=0||DOB11[temp].year>10000)
 {
 do
 {
  clreol();
  cout<<"Invalid input for year !"<<"
";
  cout<<"Please enter the year correctly :"<<"
";
  cin>>DOB11[temp].year;
 }while(DOB11[temp].year<0||DOB11[temp].year>10000);
 }
 clreol();
 cout<<"Month :";
 clreol();
 cin>>DOB11[temp].month;
 if(DOB11[temp].month<=0||DOB11[temp].month>12)
 {
 do
 {
  clreol();
  cout<<"Invalid input for month !"<<"
";
  cout<<"Again enter the month :"<<"
";
  clreol();
  if(count!=0)
  {
  clreol();
  }
  cin>>DOB11[temp].month;
 }while(DOB11[temp].month<0||DOB11[temp].month>12);
 }
 cout<<"Date :";
 clreol();
 switch(DOB11[temp].month)
 {
 case 1:
 case 3:
 case 5:
 case 7:
 case 8:
 case 10:
 case 12:{
      cin>>DOB11[temp].date;
      while(DOB11[temp].date<1||DOB11[temp].date>31)
      {
      clreol();
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      clreol();
      cin>>DOB11[temp].date;
      }
      break;
     }
 case 2:{
     cin>>DOB11[temp].date;
     if(DOB11[temp].year%4==0)
     {
      while(DOB11[temp].date<0||DOB11[temp].date>29) 
//for leap year
      {
      clreol();
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      clreol();
      cin>>DOB11[temp].date;
      }
     }
     else
     {
      while(DOB11[temp].date<0||DOB11[temp].date>28) 
//for non-leap year
      {
      clreol();
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      clreol();
      cin>>DOB11[temp].date;
      }
     }
     break;
     }
 default:{
     cin>>DOB11[temp].date;
     while(DOB11[temp].date<1||DOB11[temp].date>30)
     {
      clreol();
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      clreol();
      cin>>DOB11[temp].date;
     }
     break;
     }
 }		//end of switch
 clreol();
}
void date::enter_date()
{
 cout<<"
First of all I need the current date ..."<<"
";
 cout<<"
Year :";
 cin>>year;
 if(year<=0||year>10000)
 {
 do
 {
  cout<<"Invalid input for year !"<<"
";
  cout<<"Please enter the year correctly :"<<"
";
  cin>>year;
 }while(year<0||year>10000);
 }
 cout<<"Month :";
 cin>>month;
 if(month<=0||month>12)
 {
 do
 {
  cout<<"Invalid input for month !"<<"
";
  cout<<"Again enter the month :"<<"
";
  cin>>month;
 }while(month<0||month>12);
 }
 cout<<"Date :";
 switch(month)
 {
 case 1:
 case 3:
 case 5:
 case 7:
 case 8:
 case 10:
 case 12:{
      cin>>date;
      while(date<1||date>31)
      {
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      cin>>date;
      }
      break;
     }
 case 2:{
     cin>>date;
     if(year%4==0)
     {
      while(date<0||date>29) //for leap year
      {
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      cin>>date;
      }
     }
     else
     {
      while(date<0||date>28) //for non-leap year
      {
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      cin>>date;
      }
     }
     break;
     }
 default:{
     cin>>date;
     while(date<1||date>30)
     {
      cout<<"Invalid date !"<<"
";
      cout<<"Again enter the date :"<<"
";
      cin>>date;
     }
     break;
     }
 }		//end of switch
}
void date::show_date() //remove the goto ststements in this function
{
 clrscr();
 cout<<"Hello....
 It's ";
 cout<<date;
 rem=date%10;
 switch(date)
 {
 case 11:
 case 12:
 case 13:
 case 14:
 case 15:
 case 16:
 case 17:
 case 18:
 case 19:
 case 20:{
      cout<<"th ";
      goto over;
     }
 }
 switch(rem)
 {
 case 1:{
     cout<<"st ";
     break;
     }
 case 2:{
     cout<<"nd ";
     break;
     }
 case 3:{
     cout<<"rd ";
     break;
     }
 default:{
     cout<<"th ";
     break;
     }
 }
 over:
 switch(month)
 {
 case 1:{
     cout<<"January , ";
     break;
     }
 case 2:{
     cout<<"February , ";
     break;
     }
 case 3:{
     cout<<"March , ";
     break;
     }
 case 4:{
     cout<<"April , ";
     break;
     }
 case 5:{
     cout<<"May , ";
     break;
     }
 case 6:{
     cout<<"June , ";
     break;
     }
 case 7:{
     cout<<"July , ";
     break;
     }
 case 8:{
     cout<<"August , ";
     break;
     }
 case 9:{
     cout<<"September , ";
     break;
     }
 case 10:{
     cout<<"October , ";
     break;
     }
 case 11:{
     cout<<"November , ";
     break;
     }
 case 12:{
     cout<<"December , ";
     break;
     }
 }
 cout<<year<<" 
";
}
void all::show_patient_detail()
{
 do
 {
 clrscr();
 cout<<"
Enter registration number :"<<"
";
 clreol();
 cin>>regis;
 cin.get(ch);
 show_count++;
 if(regis>0&®is<serial)
 {
  clreol();
  cout<<"
	 ***INFORMATION FOR PATIENT REGISTRATION NUMBER"<<regis<<"***
";
  clreol();
  cout<<"Name      : "<<PI[regis].name<<"
";
  clreol();
  cout<<"Sex      : ";
  clreol();
  if(PI[regis].sex==1)
  {
  cout<<"Male "<<"
";
  clreol();
  }
  if(PI[regis].sex==2)
  {
  cout<<"Female "<<"
";
  clreol();
  }
  cout<<"Blood Group  : ";
  clreol();
  switch(PI[regis].bld_group)
  {
  case 1:{
      clreol();
      cout<<"A+
";
      break;
      }
  case 2:{
      clreol();
      cout<<"A-
";
      break;
      }
  case 3:{
      clreol();
      cout<<"B+
";
      break;
      }
  case 4:{
      clreol();
      cout<<"B-
";
      break;
      }
  case 5:{
      clreol();
      cout<<"AB+
";
      break;
      }
  case 6:{
      clreol();
      cout<<"AB-
";
      break;
      }
  case 7:{
      clreol();
      cout<<"O+
";
      break;
      }
  case 8:{
      clreol();
      cout<<"O-
";
      break;
      }
  }
  clreol();
  cout<<"Date of birth : ";
  clreol();
  DOB1.show_date();
  cout<<"Martial Status : ";
  clreol();
  if(PI[i].martial_status==1)
  {
  cout<<"Married "<<"
";
  clreol();
  }
  else
  {
  cout<<"Not married "<<"
";
  clreol();
  }
  clreol();
  cout<<"
     **ADDRESS**"<<"
";
  clreol();
  cout<<"
House no.   : "<<PI[regis].AD1.house;
  clreol();
  cout<<"
Street     : "<<PI[regis].AD1.street;
  clreol();
  cout<<"
City      : "<<PI[regis].AD1.city;
  clreol();
  cout<<"
State     : "<<PI[regis].AD1.state;
  clreol();
  cout<<"
Country    : "<<PI[regis].AD1.country;
  clreol();
 }
 else
 {
  if(regis==1)
  {
  cout<<"
Database is empty !!!"<<"
";
  cout<<"Press any key to exit to main task menu..."<<"
";
  getch();
  clrscr();
  A1.tasks();
  }
  attempt++;
  if(attempt==3)
  {
  cout<<"
You have entered wrong registration number 3 times 
."<<"
";
  cout<<"Access Denied!!! "<<"
";
  cout<<"Please try again later. "<<"
";
  cout<<"Press any key to exit to main task menu..."<<"
";
  getch();
  clrscr();
  A1.tasks();
  }
  clreol();
  cout<<"
Sorry, the registration number is invalid ."<<"
";
  cout<<"Press any key to continue...."<<"
";
  getch();
  clreol();
  A1.show_patient_detail();
 }
 clreol();
 cout<<"
Want to see information of another patient :"<<"
";
 clreol();
 cin>>answer1;
 }while(answer1=='y'||answer1=='Y');
 clreol();
 clrscr();
 A1.tasks();
}
void dob::show_date()
{
 cout<<DOB11[regis].date;
 rem=DOB11[regis].date%10;
 switch(DOB11[regis].date)
 {
 case 11:
 case 12:
 case 13:
 case 14:
 case 15:
 case 16:
 case 17:
 case 18:
 case 19:
 case 20:{
      cout<<"th ";
      goto over;
     }
 }
 switch(rem)
 {
 case 1:{
     cout<<"st ";
     break;
     }
 case 2:{
     cout<<"nd ";
     break;
     }
 case 3:{
     cout<<"rd ";
     break;
     }
 default:{
     cout<<"th ";
     break;
     }
 }
 over:
 switch(DOB11[regis].month)
 {
 case 1:{
     cout<<"January , ";
     break;
     }
 case 2:{
     cout<<"February , ";
     break;
     }
 case 3:{
     cout<<"March , ";
     break;
     }
 case 4:{
     cout<<"April , ";
     break;
     }
 case 5:{
     cout<<"May , ";
     break;
     }
 case 6:{
     cout<<"June , ";
     break;
     }
 case 7:{
     cout<<"July , ";
     break;
     }
 case 8:{
     cout<<"August , ";
     break;
     }
 case 9:{
     cout<<"September , ";
     break;
     }
 case 10:{
     cout<<"October , ";
     break;
     }
 case 11:{
     cout<<"November , ";
     break;
     }
 case 12:{
     cout<<"December , ";
     break;
     }
 }
 cout<<DOB11[regis].year<<" 
";
}
void all::software_detail()
{
 clrscr();
 cout<<"

			 ***SOFTWARE DETAILS***
";
 cout<<"
	Developer        : Bimal Kumar Barik "<<"
";
 cout<<"	Programming Language   : C++ and oops"<<"
";
 cout<<"	Aim           : Simulation of the software used in Hospital"<<"
";
 cout<<"
	Hope you like it..."<<"
";
 cout<<"
	Send your comments to : bimal.nitt@gmail.com ."<<"
";
 cout<<"
	Thank You for trying this program. "<<"
";
 cout<<"

Press any key to return to the main task menu......."<<"
";
 getch();
 A1.tasks();
}