C++ Mortgage Schedule...Plea se help!!

[promiscuoustx]

I am trying to get my program to compile, but it will not complete. At line 79 it states, cannot convert 'float()()' to 'float' in assignment. Here is my code.

#include <iostream>        
#include <iomanip>
#include <cmath>    
#include <cctype>
#include <stdlib.h>
#include <sstream>    
 
using namespace std;
 
void MortSched(double, double, int);
 
//The structure below will contain the mortgage information
 
struct PaymentInfo
{
       float fMonPayment;
       float fYears;
       float fInterestRate;
       float fLoanAmount;
       };
 
int GetPayment();
int LoopAgain();
float UserInput();
void GetPaymentInfo(PaymentInfo& payinfo);
void DeterminePayment(PaymentInfo& payinfo);
void ShowPayment(PaymentInfo& payinfo);
char iResponse;
 
//The following section of code will validate user input.  We only want the user to
//be able to enter numbers or the decimal.
 
class nondigit
{
      public:
             bool operator() (char c)
             {
                  if (c =='.')
                  {
                        return !1;
                        }
                        else
                        {
                            return !isdigit(c);
                            }
                            }
                            };
 
//This next section of code will accept the user input and validate all input
//the user enters.  The main function here is to validate all user input.
 
float UserInput()
{
      float output;
      string input;
      cin >> input;
      if (find_if(input.begin(), input.end(), nondigit()) == input.end())
      {
                                 stringstream mc(input);
                                 mc >> output;
                                 }
                                 else
                                 {
                                     cout << input << " is not a valid number! Please try again!\n";
                                     output = UserInput;
                                     }
                                     return output;
                                     }
 
//The next section of code prompts the user to enter the amounts for the mortgage calculator
 
void GetPaymentInfo(PaymentInfo& payinfo)
{
     cout << "********************Mortgage Calculator********************\n";
     cout << "What is the amount of the mortgage?  For example 200000\n";
     payinfo.fLoanAmount = UserInput();
     cout << "What is the amount of years the mortgage will be financed? For example 30\n";
     payinfo.fYears = UserInput();
     cout << "What is the interest rate? For example 5.75\n";
     payinfo.fInterestRate = UserInput();
     }
 
//The following code calculates the monthly payment amount based on the users input
 
void DeterminePayment(PaymentInfo& payinfo)
{
     payinfo.fMonPayment =
     {
                         payinfo.fLoanAmount *
                         {
                                             (payinfo.fInterestRate / 100) / 12 * pow((payinfo.fInterestRate / 100) / 12 + 1, (payinfo.fYears * 12)))
                                             /
                                             (pow((payinfo.fInterestRate / 100) / 12 + 1, (payinfo.fYears * 12))-1
                                             }
                                             }
                                             };
                                             }
 
//The following code displays the payment amount based on the users input
 
void ShowPayment(PaymentInfo& payinfo)
{
     cout << "Amount of mortgage = $\n" << payinfo.fLoanAmount <<;
     cout << "Years financed = \n" << payinfo.fYears <<;
     cout << "Interest Rate = \n" << payinfo.fInterestRate <<;
     cout << "Monthly Payment Amount = $\n" << payinfo.MonPayment <<;
     }
 
//The next section will allow the user to run the program again or exit the program
 
int LoopAgain()
{
    int loop = 0;
    char mychar[7];
    cout << "To run this program again, please press 1, and then press enter.\n";
    cout << "To exit this program, please press 2, and then press enter.\n";
    cin >> ws;
    cin.getline(mychar,7);
    if (mychar[0] == '1')
    {
                  cout << "Thank you for choosing option 1.  This program will run again.\n";
                  run = 1;
                  }
                  else
                  {
                      cout << "Thank you for choosing option 2.  This program will now exit.\n";
                      run = 0;
                      }
                      return run;
                      }
 
int runGetPayment()
{
    float fMonPayment = 0.00;
    PaymentInfo structPaymentInfo;
    GetPaymentInfo(structPaymentInfo);
    DeterminePayment(structPaymentInfo);
    ShowPayment(structPaymentInfo);
    int again = LoopAgain();
    return again;
}
 
//We will offer the user the option to view the amortization schedule
 
cout.setf(ios::showpoint | ios::fixed);
cout.precision(2);
 
cout << "Would you like to view the Amortization Schedule? Press Y or N.\n";
iResponse = getch();
if(iResponse == 'Y' || iResponse == 'y')
{
   MortSched(fLoanAmount, finterestRate, fYears);
            iResponse = '\n';   
            }
            else
            {   
                iResponse = '\n';
        }    
        cout << endl << "Would you like to run this again? Press Y or N. ";
        iResponse = getch();
 
    }while((iResponse == 'Y') || (iResponse == 'y'));
 
    return 0;
}
//The following code will calculate the amortization schedule.
 
void MortSched(double fLoanAmount, double fInterestRate, int fYears)
{
    double Balance, PaidInt, MonPayment, LoanAmount, Principle;
    int lineCount = 0;
    cout.setf(ios::left);
    MonPayment = calcPayment(&LoanAmount, &InterestRate, &Years);
    Balance = LoanAmount;      
    for (int InstallNumber = 1; InstallNumber <= Years; ++InstallNumber)
    {
        if (lineCount == 0)
        {
            system("CLS");
            cout << "Payment          Loan          Principle          Interest" << endl;
            cout << "No.              Balance       Payment            Payment" << endl;
            cout << "**********************************************************" << endl; 
        }
 
        PaidInt = Balance * (InterestRate / (12 * 100));
        LoanAmount = MonPayment - PaidInt;
        Principle = Balance - Principle;
        cout << setw(12) << InstallNumber
             << setw(15) << Balance
               << setw(15) << MonPayment
             << setw(15) << PaidInt << endl;
        Balance = Principle;        
        if (lineCount==12)
        {
            system("pause");
            lineCount = 0;
                    } 
                           else
        {
            lineCount++;
        }
    }
 
    cout.unsetf(ios::left);
    return;
}
 

Thanks for all the help!!

[Banfa]

In function UserInput

output = UserInput;

should be

output = UserInput();


It would be more normal to produce this behaviour(rejec ting a bad input value) using a loop rather than recursion.

[promiscuoustx]

I have almost got everything worked out to the end, but can you please explain to me why it is hanging on line 170?

MortSched(fLoanAmount, fInterestRate, fYears);

It says that fLoanAmount and the others are not declared, but I declared them in my structure at the beginning of the program? I am REALLY new to programming and so far I have been treated like an idiot from all the other forums I have asked. I am not a software person at all. I am a hardware oriented person, but of course this is one of my degree requirements. My amended code is as follows:

#include <iostream>        
#include <iomanip>
#include <cmath>    
#include <cctype>
#include <stdlib.h>
#include <sstream>    
#include <cstdlib>
 
using namespace std;
 
void MortSched(double, double, int);
 
//The structure below will contain the mortgage information
 
struct PaymentInfo
{
       float fMonPayment;
       float fYears;
       float fInterestRate;
       float fLoanAmount;
};
 
int GetPayment();
int LoopAgain();
float UserInput();
void GetPaymentInfo(PaymentInfo& payinfo);
void DeterminePayment(PaymentInfo& payinfo);
void ShowPayment(PaymentInfo& payinfo);
char iResponse;
 
//The following section of code will validate user input.  We only want the user to
//be able to enter numbers or the decimal.
 
class nondigit
{
      public:
             bool operator() (char c)
             {
                  if (c =='.')
                  {
                        return !1;
                  }
                        else
                        {
                            return !isdigit(c);
                        }
             }
};
 
//This next section of code will accept the user input and validate all input
//the user enters.  The main function here is to validate all user input.
 
float UserInput()
{
      float output;
      string input;
      cin >> input;
      if (find_if(input.begin(), input.end(), nondigit()) == input.end())
      {
                                 stringstream mc(input);
                                 mc >> output;
      }
                                 else
                                 {
                                     cout << input << " is not a valid number! Please try again!\n";
                                     output = UserInput();
                                  }
                                     return output;
}
 
//The next section of code prompts the user to enter the amounts for the mortgage calculator
 
void GetPaymentInfo(PaymentInfo& payinfo)
{
     cout << "********************Mortgage Calculator********************\n";
     cout << "What is the amount of the mortgage?  For example 200000\n";
     payinfo.fLoanAmount = UserInput();
     cout << "What is the amount of years the mortgage will be financed? For example 30\n";
     payinfo.fYears = UserInput();
     cout << "What is the interest rate? For example 5.75\n";
     payinfo.fInterestRate = UserInput();
}
 
//The following code calculates the monthly payment amount based on the users input
 
void DeterminePayment(PaymentInfo& payinfo)
{
     payinfo.fMonPayment = (0);
     {
                         payinfo.fLoanAmount = (0);
                         {
                                             ((payinfo.fInterestRate / 100) / 12 * pow((payinfo.fInterestRate / 100) / 12 + 1, (payinfo.fYears * 12)))
                                             /
                                             (pow((payinfo.fInterestRate / 100) / 12 + 1, (payinfo.fYears * 12))-1);
                         }
      }
}                                       
 
//The following code displays the payment amount based on the users input
 
void ShowPayment(PaymentInfo& payinfo)
{
     cout << "Amount of mortgage = $\n" << payinfo.fLoanAmount << endl;
     cout << "Years financed = \n" << payinfo.fYears << endl;
     cout << "Interest Rate = \n" << payinfo.fInterestRate << endl;
     cout << "Monthly Payment Amount = $\n" << payinfo.fMonPayment << endl;
}
 
//The next section will allow the user to run the program again or exit the program
 
int LoopAgain()
{
    int run = 0;
    int loop = 0;
    char mychar[7];
    cout << "To run this program again, please press 1, and then press enter.\n";
    cout << "To exit this program, please press 2, and then press enter.\n";
    cin >> ws;
    cin.getline(mychar,7);
    if (mychar[0] == '1')
    {
                  cout << "Thank you for choosing option 1.  This program will run again.\n";
                  run = 1;
    }
                  else
                  {
                      cout << "Thank you for choosing option 2.  This program will now exit.\n";
                      run = 0;
                  }
                      return run;
}
 
int runGetPayment()
{
    float fMonPayment = 0.00;
    PaymentInfo structPaymentInfo;
    GetPaymentInfo(structPaymentInfo);
    DeterminePayment(structPaymentInfo);
    ShowPayment(structPaymentInfo);
    int again = LoopAgain();
    return again;
}
 
//We will offer the user the option to view the amortization schedule
int main()
{
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);
 
                  cout<< endl << "Would you like to view the Amortization Schedule? Press Y or N.\n";
                  iResponse = getchar();
 
if(iResponse == 'Y' || iResponse == 'y')
 
   MortSched(fLoanAmount, fInterestRate, fYears);
            iResponse = '\n';   
}
            else
            {   
                iResponse = '\n';
            }      
        cout << endl << "Would you like to run this again? Press Y or N. ";
        iResponse = getch();
        do
 
}
    while((iResponse == 'Y') || (iResponse == 'y'));
 
    return 0;
}
//The following code will calculate the amortization schedule.
 
void MortSched(double fLoanAmount, double fInterestRate, int fYears)
{
    double Balance, PaidInt, MonPayment, LoanAmount, Principle;
    int lineCount = 0;
    cout.setf(ios::left);
    MonPayment = calcPayment(&LoanAmount, &InterestRate, &Years);
    Balance = LoanAmount;      
    for (int InstallNumber = 1; InstallNumber <= Years; ++InstallNumber)
    {
        if (lineCount == 0)
        {
            system("CLS");
            cout << "Payment          Loan          Principle          Interest" << endl;
            cout << "No.              Balance       Payment            Payment" << endl;
            cout << "**********************************************************" << endl; 
        }
 
        PaidInt = Balance * (InterestRate / (12 * 100));
        LoanAmount = MonPayment - PaidInt;
        Principle = Balance - Principle;
        cout << setw(12) << InstallNumber
             << setw(15) << Balance
               << setw(15) << MonPayment
             << setw(15) << PaidInt << endl;
        Balance = Principle;        
        if (lineCount==12)
           {
            system("pause");
            lineCount = 0;
            } 
                           else
        {
            lineCount++;
        }
}
 
    cout.unsetf(ios::left);
    return;
}

Thanks for all your help!!

[Banfa]

I have almost got everything worked out to the end, but can you please explain to me why it is hanging on line 170?

MortSched(fLoanAmount, fInterestRate, fYears);

It says that fLoanAmount and the others are not declared, but I declared them in my structure at the beginning of the program?

Declaring a structure does not declare data, it declares the form of the data. You then have to declare a variable of that structure type and then when you want to access members of the variable you have to use the variable name plus the member name.

Like this

/* Declare the structure */
struct MyExampleStructure {
    int iIntegerMember;
    float fFloatingPointMember
};
 
/* Declare a variable of type struct MyExampleStructure */
struct MyExampleStructure mes;
 
/* Access the structure members of mes */
mes.iIntegerMember = 10;
mes.fFloatingPointMember = 1.618;
 

You compiler complains about the variables in this code line

MortSched(fLoanAmount, fInterestRate, fYears);

because you don't actually have variables called fLoanAmount, fInterestRate or fYears.

Is that clear?