HMS.cpp

//C++ program to implement working of hospital management system
#include<iostream>
#include<cstring>
#include<cstdlib>
#include<fstream>
#include<ctime>
using namespace std;
int month[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
int leap(int y,int m)
{ 
	if(m==2&&(y%4==0&&y%100!=0||y%400==0))
          return 1;
    else 
          return 0;
}
class date
{
    public: int year;
            int month;
            int day;
    public:
            void curdate();
       
}; 

/*curdate()-Member function of date class.
  Retrieves and stores current date in date object.*/
void date::curdate()
{
  	time_t now = time(0);
  	tm *ltm = localtime(&now);
  	year= 1900 + ltm->tm_year;
  	month= 1 + ltm->tm_mon;
  	day=ltm->tm_mday;
}

struct address
{
  	int hno;
  	char area[10];
  	char city[20];
  	char pin[8];
};

/*patient class which contains details of patients like name,age etc.
  Common to both in-patients and out-patients.*/
class patient 
{
    protected:  char firstname[30];
                char lastname[30];
                date dob,doa;
                address addr;
                char bloodgrp[10];
                char phno[15];
                char sex;
                int pid;
                char doc[30];         
    public:     char status[15];
                void getdata();
                void printdata();
                int search(int);
};

void patient::getdata()
{
    doa.curdate();
    cout<<"\nEnter Patient ID:";
    cin>>pid;
    cout<<"\nEnter Patient name :";
    cin>>firstname>>lastname;
    a:
        cout<<"\nEnter patient gender M/F/O :";
        cin>>sex;
        if(sex=='M'||sex=='F'||sex=='O'||sex=='m'||sex=='f'||sex=='o')
        {
            cout<<"\nEnter Patient phone no.:";
            cin>>phno;
        }
        else goto a;
    b:
        cout<<"\nEnter date of birth in ddmmyyyy format:";
        cin>>dob.day>>dob.month>>dob.year;
        if(dob.day<0||dob.day>(month[dob.month]+leap(dob.year,dob.month))||dob.month<0||dob.month>12||dob.year<1904||dob.year>2014)
              goto b;
    c:
        cout<<"\nEnter patient blood group:";
        cin>>bloodgrp;
        if(!strcmp(bloodgrp,"A+")||!strcmp(bloodgrp,"A-")||!strcmp(bloodgrp,"B+")||!strcmp(bloodgrp,"B-")||!strcmp(bloodgrp,"O+")||
              !strcmp(bloodgrp,"O-")||!strcmp(bloodgrp,"AB+")||!strcmp(bloodgrp,"AB-")||!strcmp(bloodgrp,"a+")||!strcmp(bloodgrp,"a-")||
              !strcmp(bloodgrp,"b+")||!strcmp(bloodgrp,"b-")||!strcmp(bloodgrp,"o+")||!strcmp(bloodgrp,"o-")||!strcmp(bloodgrp,"ab+")||
              !strcmp(bloodgrp,"ab-"))
        {
        cout<<"\nEnter name of doctor:";
        cin>>doc;
        }
        else goto c;
    cout<<"\nEnter Patient address\nEnter house no.:";
    cin>>addr.hno;
    cout<<"\nEnter area name:";
    cin>>addr.area;
    cout<<"\nEnter city name:";
    cin>>addr.city;
    cout<<"\nEnter pin code:";
    cin>>addr.pin;
}

void patient::printdata()
{
    cout<<"\nPatient ID\t\t: "<<pid;
    cout<<"\nPatient Name\t\t: "<<firstname<<" "<<lastname;
    cout<<"\nPatient gender\t\t: "<<sex;
    cout<<"\nPatient type\t\t: "<<status;
    cout<<"\nBlood Group\t\t: "<<bloodgrp;
    cout<<"\nDate of birth\t\t: "<<dob.day<<" "<<dob.month<<" "<<dob.year;
    cout<<"\nDate of visit/admission\t: "<<doa.day<<" "<<doa.month<<" "<<doa.year;
    cout<<"\nPatient address\t\t: "<<addr.hno<<"\n\t\t\t  "
            <<addr.area<<"\n\t\t\t  "<<addr.city<<"\n\t\t\t  "<<addr.pin;
    cout<<"\nPatient Phone\t\t: "<<phno;
    cout<<"\nDoctor Assigned\t\t: "<<doc;
}

int patient::search(int id)
{
 	if(pid==id)
   	 return 1;
  	else
   	 return 0;
}
class counter
{
	public:   int n,s,d;
		      int N[150],S[100],D[50];
		      friend int check(int,counter);
};

class inpatient:public patient
{
  protected:    int wardno;
	            date dod;
                char wardtype[10];
  public: 	  void getinfo();
		      void printinfo();
		      friend int check(int,counter);

};


void inpatient::getinfo()
{     
	counter count;
	int ch;
	d:
	cout<<"Enter the preferred ward type: 1.Normal\t2.Semi\t3.Deluxe\n";
	cin>>ch;
	if(ch==1) strcpy(wardtype,"Normal");
	else if(ch==2) strcpy(wardtype,"Semi");
	else if(ch==3) strcpy(wardtype,"Deluxe");   
	else goto d;
	int a=check(ch,count);
	if(a!=-1)
	{
        wardno=a;
        cout<<"Ward number assigned is : "<<wardno<<" of type :"<<wardtype;
	}
	else
	{
        cout<<"Sorry all such wards are full. Try another type.\n";
        goto d;
	} 
	
	dod.day=0;
	dod.month=0;
	dod.year=0;   
}

void inpatient::printinfo()
{
	cout<<"\nWard No\t\t\t: "<<wardno;
	cout<<"\nWard Type\t\t: "<<wardtype;
	if(dod.day!=0)
	   cout<<"\nDate of discharge\t\t: "<<dod.day<<" "<<dod.month<<" "<<dod.year;
	cout<<"\n\n";
}

int check(int ch,counter count)
{
 	int ret,i=0;
	fstream c;
	c.open("count",ios::in|ios::out|ios::app);
	if(!c)
    {
        cout<<"File cannot be opened\n";
        exit(0);
	}
	c.read((char *)&count,sizeof(count));
	switch(ch)
	{
 		case 1: 
		{
				if(count.n==0)
				        return -1;
				else
				{       
                    while(i<150&&count.N[i]!=0)
					    i++;
					count.N[i]=1;
					ret=i+1;
                }
                count.n=(count.n)-1;
                int l=c.tellg();
                c.close();
                c.open("count",ios::out|ios::binary|ios::ate);
                c.seekg(l-sizeof(count));
                c.write((char *)&count,sizeof(count));
                return ret;
		}
		case 2: 
		{
				if(count.s==0)
				   return -1;
				else
				{   
					while(i<100&&count.S[i]!=0)
					    i++;
					count.S[i]=1;
					ret=i+1;
				}
                count.s=(count.s)-1;
                int l=c.tellg();
                c.close();
                c.open("count",ios::out|ios::binary|ios::ate);
                c.seekg(l-sizeof(count));
                c.write((char *)&count,sizeof(count));
                return ret;
				
		}
		case 3: 
		{
				if(count.d==0)
				   return -1;
				else
				{
					while(i<150&&count.D[i]!=0)
					    i++;
					count.D[i]=1;
					ret=i+1;
				}
                count.d=(count.d)-1;
                int l=c.tellg();
                c.close();
                c.open("count",ios::out|ios::binary|ios::ate);
                c.seekg(l-sizeof(count));
                c.write((char *)&count,sizeof(count));
                return ret;
				
		}
	
	}		

}
	
int main()
{	
	counter ctr;
 	fstream c;
	c.open("count",ios::in|ios::out|ios::app);
	if(!c)
    {
        cout<<"File cannot be opened\n";
        exit(0);
	}
	c.seekg(0,ios::end);
	int len=c.tellg();
	if(len==0)
	{
        c.seekg(0,ios::beg);
        ctr.n=150;
        ctr.s=100;
        ctr.d=50;
        for(int i=0;i<150;i++)
            ctr.N[i]=0;
        for(int i=0;i<100;i++)
            ctr.S[i];
        for(int i=0;i<50;i++)
            ctr.D[i]=0;
        c.write((char *)&ctr,sizeof(ctr));
        getchar();
	}
	c.close();
    menu:
        fstream f1,f2;
        patient obj;
        inpatient obj1;
        int choice;
        char ans;
        cout<<"**********************************************************************\n";
        cout<<"\n\t\tHOSPITAL MANAGEMENT SYSTEM\n";
        cout<<"**********************************************************************\n";
        cout<<"MENU:\n1.Enter patient information\n"<<
                   "2.Display all patient information\n"<<
                   "3.Search & display patient information\n"<<
                   "4.Discharge & Invoice details\n"<<endl;
        cin>> choice;
        f1.open("outpatient",ios::in|ios::out|ios::app|ios::binary);
        if(!f1)
        {
            cout<<"File cannot be opened\n";
            exit(0);
        }
        f2.open("inpatient",ios::in|ios::out|ios::app|ios::binary);
        if(!f2)
        {
            cout<<"File cannot be opened\n";
            exit(0);
        }
        switch(choice)
        {
            case 1:
            {       
                cout<<"**********************************************************************\n";
                cout<<"\n\t\tCREATE NEW PATIENT DATABASE\n";
                cout<<"**********************************************************************\n";
                z:
                cout<<"Enter patient type 1.Inpatient\t2.Outpatient: ";
                cin>>choice;
                if(choice==2)
                {	
                    strcpy(obj.status,"Outpatient");
                    obj.getdata();
                    f1.write((char *)&obj,sizeof(obj));
                    getchar();
                    f1.close();
                }
                else if(choice==1)
                {
                    strcpy(obj1.status,"Inpatient");
                    obj1.getdata();
                    obj1.getinfo();
                    f2.write((char *)&obj1,sizeof(obj1));
                    getchar();
                    f2.close();
                }
                else goto z;
                    cout<<"\nDo You Want To Continue? y/n  :";
                cin>>ans;
                if(ans=='Y' || ans=='y')
                    goto menu;
                else
                    break;
            }
            case 2:
            {       
                int ch;
                cout<<"**********************************************************************\n";
                cout<<"\n\t\tDISPLAY PATIENT DATABASE\n";
                cout<<"**********************************************************************\n";
                e:
                cout<<"Display 1.Inpatients\t2.Outpatients:";
                cin>>ch;
                if(ch==1)
                {
                    f2.seekg(0);
                    while(f2.read((char *)&obj1,sizeof(obj1)))
                    {
                        obj1.printdata();
                        obj1.printinfo();
                        if(f2.eof()==1)
                        {
                            break;
                        }
                    }
                    f2.close();
                }
                else if(ch==2)
                {
                    f1.seekg(0);
                    while(f1.read((char *)&obj,sizeof(obj)))
                    {
                        obj.printdata();
                        if(f1.eof()==1)
                        {
                            break;
                        }
                    }
                    f1.close();
                }
                else goto e;
                cout<<"\nDo You Want To Continue? y/n  :";
                cin>>ans;
                if(ans=='Y' || ans=='y')
                    goto menu;
                else
                    break;
            }
            case 3:
            {	
                cout<<"**********************************************************************\n";
                cout<<"\n\t\tSEARCH PATIENT DATABASE\n";
                cout<<"**********************************************************************\n";
                int id,flag,ch;
                f:
                cout<<"Search 1.Inpatient\t2.Outpatient:";
                cin>>ch;
                cout<<"Enter pid of patient to be searched: ";
                cin>>id;
                if(ch==1)
                {
                    f2.seekg(0);
                    while(f2.read((char *)&obj1,sizeof(obj1)))
                    {
                        flag=obj1.search(id);
                        if(flag==1)
                        { 
                             obj1.printdata();
                             obj1.printinfo();
                             break;
                        }
                        if(f2.eof())
                        {
                            break;
                        }
                    }
                    if(flag!=1)
                        cout<<"Patient not found\n";
                    f2.close();
                }
                else if(ch==2)
                {
                    f1.seekg(0);
                    while(f1.read((char *)&obj,sizeof(obj)))
                    {
                        flag=obj.search(id);
                        if(flag==1)
                        { 
                             obj.printdata();
                             break;
                        }
                        if(f1.eof())
                        {
                            break;
                        }
                    }
                    if(flag!=1)
                    cout<<"Patient not found\n";
                    f1.close();
                }
                else goto f;
                cout<<"\nDo You Want To Continue? y/n  :";
                cin>>ans;
                if(ans=='Y'||ans=='y')
                    goto menu;
                else
                    break;
            }
            case 4:
                default: exit(0);
        }
}