A health care issue that has been in the news lately is the computerization of h

Question

A health care issue that has been in the news lately is the computerization of health records. This probability is being approached cautiously because of sensitive privacy and security concerns, among others. [We address such concerns in later excercises.] Computerizing health records could make it easier for patients to share their health profiles and histories among their various health care professionals. This could improve the quality of health care, help avoid drug conflicts and erroneous drug prescriptions, reduce costs and in emergencies, could save lives. In this excercise, you'll design a "starter" HealthProfile class for a person. The class attributes should include ther person's first name, last name, gender, date of birth (consisting of seperate attributes for month, day, and year of birth), height (in inches) and weight (in pounds). Your class should have a constructor that recieves this data. For each attribute, provide set and get functions. The class also should include functions that calculate and return the user's age in years, maximum heart rate and target heat rate range, and body mass index (BMI). BMI is calculated by (weight in pounds * 703)/(height in inches * height in inches). Write an application that prompts for the person's information, instantiates an object of class HealthProfile for that person and prints the information from that object - including the person's first name, last name, gender, date of birth, height, and weight - then calculates and prints the person's age in years, BMI, maximum heart rate and target-heart-rate range. It should also display the "BMI values" chart. And calculate the person's age.

Explanation / Answer

here is the code for maintaining health records:

#include<iostream.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>

// define maximum number of patients in a queue
#define MAXPATIENTS 100

// define structure for patient data
struct patient
{
char FirstName[50];
char LastName[50];
char ID[20];
};


// define class for queue
class queue
{
public:
queue (void);
int AddPatientAtEnd (patient p);
int AddPatientAtBeginning (patient p);
patient GetNextPatient (void);
int RemoveDeadPatient (patient * p);
void OutputList (void);
char DepartmentName[50];
private:
int NumberOfPatients;
patient List[MAXPATIENTS];
};


// declare member functions for queue

queue::queue ()
{
// constructor
NumberOfPatients = 0;
}


int queue::AddPatientAtEnd (patient p)
{
// adds a normal patient to the end of the queue.
// returns 1 if successful, 0 if queue is full.
if (NumberOfPatients >= MAXPATIENTS)
{
// queue is full
return 0;
}
// put in new patient
else
List[NumberOfPatients] = p; NumberOfPatients++;
return 1;
}


int queue::AddPatientAtBeginning (patient p)
{
// adds a critically ill patient to the beginning of the queue.
// returns 1 if successful, 0 if queue is full.
int i;
if (NumberOfPatients >= MAXPATIENTS)
{
// queue is full
return 0;
}

// move all patients one position back in queue
for (i = NumberOfPatients-1; i >= 0; i--)
{
List[i+1] = List[i];
}
// put in new patient
List[0] = p; NumberOfPatients++;
return 1;
}


patient queue::GetNextPatient (void)
{
// gets the patient that is first in the queue.
// returns patient with no ID if queue is empty

int i; patient p;
if (NumberOfPatients == 0) {
// queue is empty
strcpy(p.ID,"");
return p;}
// get first patient
p = List[0];
// move all remaining patients one position forward in queue
NumberOfPatients--;
for (i=0; i<NumberOfPatients; i++)
{
List[i] = List[i+1];
}
// return patient
return p;
}


int queue::RemoveDeadPatient (patient * p)
{
// removes a patient from queue.
// returns 1 if successful, 0 if patient not found
int i, j, found = 0;
// search for patient
for (i=0; i<NumberOfPatients; i++)
{
if (stricmp(List[i].ID, p->ID) == 0)
{
// patient found in queue
*p = List[i]; found = 1;
// move all following patients one position forward in queue
NumberOfPatients--;
for (j=i; j<NumberOfPatients; j++)
{
List[j] = List[j+1];
}
}
}
return found;
}


void queue::OutputList (void)
{
// lists entire queue on screen
int i;
if (NumberOfPatients == 0)
{
cout << "
Queue is empty";
}
else
{

for (i=0; i<NumberOfPatients; i++)
{
cout << "
" << List[i].FirstName;
cout << " " << List[i].LastName;
cout << " " << List[i].ID;
}
}
}


// declare functions used by main:

patient InputPatient (void)
{
// this function asks user for patient data.
patient p;
cout << "

Please enter data for new patient
First name: ";
cin.getline(p.FirstName, sizeof(p.FirstName));
cout << "
Last name: ";
cin.getline(p.LastName, sizeof(p.LastName));
cout << "
Social security number: ";
cin.getline(p.ID, sizeof(p.ID));
// check if data valid
if (p.FirstName[0]==0 || p.LastName[0]==0 || p.ID[0]==0)
{
// rejected
strcpy(p.ID,"");
cout << "

Error: Data not valid. Operation cancelled.";
getch();
}
return p;
}


void OutputPatient (patient * p)
{
// this function outputs patient data to the screen
if (p == NULL || p->ID[0]==0)
{
cout << "
No patient";
return;
}
else
cout << "

Patient data:";
cout << "

First name: " << p->FirstName;
cout << "

Last name: " << p->LastName;
cout << "

Social security number: " << p->ID;
}


int ReadNumber()
{
// this function reads an integer number from the keyboard.
// it is used because input with cin >> doesn't work properly!
char buffer[20];
cin.getline(buffer, sizeof(buffer));
return atoi(buffer);
}


void DepartmentMenu (queue * q)
{
// this function defines the user interface with menu for one
department
int choice = 0, success; patient p;
while (choice != 6)
{
// clear screen
clrscr();
// print menu
cout << "


Welcome to department: " << q->DepartmentName;
cout << "

Please enter your choice:";
cout << "

1: Add normal patient";
cout << "
2: Add critically ill patient";
cout << "
3: Take out patient for operation";
cout << "
4: Remove dead patient from queue";
cout << "
5: List queue";
cout << "
6: Change department or exit
";
// get user choice
choice = ReadNumber();
// do indicated action
switch (choice)
{
case 1: // Add normal patient
p = InputPatient();
if (p.ID[0])
{
success = q->AddPatientAtEnd(p);
clrscr();
if (success)
{
cout << "
Patient added:

";

}
else
{
// error
cout << "

Error: The queue is full. Cannot add patient:";
}
OutputPatient(&p);
cout << "

Press any key";
getch();
}
break;

case 2: // Add critically ill patient
p = InputPatient();
if (p.ID[0])
{
success = q->AddPatientAtBeginning(p);
clrscr();
if (success)
{
cout << "
Patient added:

";
}
else
{
// error
cout << "

Error: The queue is full. Cannot add
patient:";
}

OutputPatient(&p);
cout << "

Press any key";
getch();
}
break;

case 3: // Take out patient for operation
p = q->GetNextPatient();
clrscr();
if (p.ID[0])
{
cout << "
Patient to operate:

";
OutputPatient(&p);}
else
{
cout << "
There is no patient to operate.";
}
cout << "

Press any key";
getch();
break;

case 4: // Remove dead patient from queue
p = InputPatient();
if (p.ID[0])
{
success = q->RemoveDeadPatient(&p);
clrscr();
if (success)
{
cout << "
Patient removed:

";
}
else
{
// error
cout << "

Error: Cannot find patient:

";
}
OutputPatient(&p);
cout << "

Press any key";
getch();
}
break;

case 5: // List queue
clrscr();
q->OutputList();
cout << "

Press any key";
getch(); break;
}
}
}


// main function defining queues and main menu
void main ()
{
int i, MenuChoice = 0;
// define three queues
queue departments[3];
// set department names
strcpy (departments[0].DepartmentName, "Heart clinic");
strcpy (departments[1].DepartmentName, "Lung clinic");
strcpy (departments[2].DepartmentName, "Plastic surgery");

while (MenuChoice != 4)
{
// clear screen
clrscr();
// print menu
cout << "


Welcome to Software City Hospital";
cout << "

Please enter your choice:
";
for (i = 0; i < 3; i++)
{
// write menu item for department i
cout << "
" << (i+1) << ": " << departments[i].DepartmentName;
}
cout << "
4: Exit
";
// get user choice
MenuChoice = ReadNumber();
// is it a department name?
if (MenuChoice >= 1 && MenuChoice <= 3)
{
// call submenu for department
// (using pointer arithmetics here:)
DepartmentMenu (departments + (MenuChoice-1));
}
}
}

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