fuction not working

[dsustudent59]

after i was able to get my other program to run with everyone's input I decided to try a different one to get a better understanding of function programming. I current objective is to write a program that computes and displays the charges for a patient’s hospital stay.

The program design is:

First, the program should ask if the patient was admitted as an in-patient or an out-patient. If the patient was an in-patient, the following data should be entered:

• The number of days spent in the hospital
• The daily rate
• Hospital medication charges
• Charges for hospital services (lab tests, etc.)

The program should ask for the following data if the patient was an out-patient:

• Charges for hospital services (lab tests, etc.)
• Hospital medication charges The program should use two overloaded functions to calculate the total charges.

One of the functions should accept arguments for the in-patient data, while the other function accepts arguments for out-patient information. Both functions should return the total charges. Input Validation: Do not accept negative numbers for any data.

The issues I am having when I attempt to complie state:

too few arguments to function `double getInPatient(int, double, double, double)'

too few arguments to function `double getOutPatient(double, double)'

it also states varibles that are declared as undeclared.

ambiguates old declaration `double getInPatient(int, double, double, double)'
ambiguates old declaration `double getOutPatient(double, double)'

I do believe if I can get past the too few arguments to function issues the rest might be taken of. Thank you in advance to all who come to my aid.

[code]
// *****************************************************************************
// Program: Overloaded Hospital
// Purpose: program that computes and displays the charges for a patient's
// hospital stay. ask if the patient was admitted as an in-patient or
// an out-patient. If the patient was an in-patient, the following data
// should be entered: The number of days spent in the hospital, The
// daily rate, Hospital medication charges, and Charges for hospital
// services (lab tests, etc.) ask for the following data if the patient
// was an out-patient: Charges for hospital services (lab tests, etc.)
// and Hospital medication charges. Input Validation: Do not accept
// negative numbers for any data.
// *****************************************************************************

# include <iostream>
using namespace std;

double getInPatient(int numberofDays, double dailyRate, double hospitalMedicationCharge, double chargesForHospitalServices);
double getOutPatient(double hospitalMedicationCharge, double chargesForHospitalServices);

int main()
{
char patientStatus;

cout << "Is the patient an In-patient or Out-patient: ";
cin >> patientStatus;

while (patientStatus !='I' || patientStatus !='i'
|| (patientStatus != 'O' || patientStatus != 'o'))
{
cout << "ERROR! Please enter one of the following (I,i O, o): ";
cin >> patientStatus;
}

[Zebulun5]

Instead of using the or operator, use and. Ironically, I can't logically figure out why it works, but the and operator definitely allows the program correctly, I tried it to make sure.

[ui uiho]

Or says if either of the conditions returns true then return true, and operator says if both conditions are true then return true.