Mortgage Calc outputs -e value - c++

Question

I have compiled and run the my equation and it seems to work completely fine from a an user interface and from the compile side, but the equation is getting lost in the inheritance somewhere. Any thoughts?
#include <iostream>
#include <cmath>
using namespace std;
class MortgageCalc
{
private:
float loan, interest, term;
int years;
float monthlyDue, totalDue, totalInt;
public:
MortgageCalc() = default;
void setData(float, float, float);
float setLoan(void); //mutator
float setIntrest(void); //mutator
float setYears(void);
float setTerm (); //mutator
float getMonthlyDue();
float getTotalDue();
float getTotalInt();
};
void MortgageCalc::setData(float l, float i, float y)
{
loan = l;
interest = i;
years = y;
}
float MortgageCalc::setLoan(void)
{
return loan;
}
float MortgageCalc::setIntrest(void)
{
return interest;
}
float MortgageCalc::setYears(void)
{
return years;
}
float MortgageCalc::setTerm()
{
term = pow((1 + ((interest/100) / 12)), (12 * years)); //simple interest calculation with power calc to establish whole number translation
return term;
}
float MortgageCalc::getMonthlyDue()
{
monthlyDue = (loan * ((interest/100) / 12) * term) / (term - 1);
return monthlyDue;
}
float MortgageCalc::getTotalDue()
{
totalDue = (getMonthlyDue() * (years * 12));
return totalDue;
}
float MortgageCalc::getTotalInt()
{
totalInt = (getTotalDue() - loan);
return totalInt;
}
int main()
{
MortgageCalc mort1;
int choice = 0;
int years = 0;
double term(0) , loan(0), interest(0);
cout << "Enter the total loan amount on your mortgage loan: $"; //established loan variable
cin >> loan;
cout << "Enter the interest rate (in whole #'s only): "; //establishes interest rate variable
cin >> interest;
cout << "Enter the length of the loan in years: "; //establishes term of payments
cin >> years;
mort1.setData(loan, interest, years);
while (choice != 3) //loop for menu options and clean function exit
{
cout << endl;
cout << "Program to Calculate Mortgage Payments" << endl <<
"1. Monthly Payment" << endl <<
"2. Total Payment" << endl <<
"3. Exit" << endl << endl <<
"Enter an option above: ";
cin >> choice;
if (choice == 1)
cout << "Monthly payment due is " << mort1.getMonthlyDue() << "." << endl;
else if (choice == 2)
cout << "Total amount for entire loan payments plus interest is $" << mort1.getTotalDue() << "." << endl <<
"Total Interest Paid for this loan amount $" << mort1.getTotalInt() << "." << endl;
}
return 0;
}
Here is the text output:
Enter the total Loan Amount: $100,000
Enter the interest Rate: 5
Enter the length of the loan: 10
Program to calculate mort payments
1. Monthly Payments
2. Total Payments
3. Exit Enter and Option Above: 1
Monthly Payment Due is: -1.56868e-036

Answer 1

Thanks for the support on this one, I found out that the term call was being placed outside of the child reference and therefore was able to update the field and return the correct input.
#include <iostream>
#include <cmath>
using namespace std;
class MortgageCalc
{
private:
float loan, interest, term;
int years;
float monthlyDue, totalDue, totalInt;
public:
MortgageCalc() = default;
void setData(float, float, float);
float setLoan(void); //mutator
float setIntrest(void); //mutator
float setYears(void);
float setTerm (); //mutator
float getMonthlyDue();
float getTotalDue();
float getTotalInt();
};
void MortgageCalc::setData(float l, float i, float y)
{ //copies arguments from input to private members
loan = l;
interest = i;
years = y;
setTerm();
}
float MortgageCalc::setTerm()
{ //simple interest calculation with power calc to establish whole number translation
term = pow((1 + ((interest/100) / 12)), (12 * years));
return term;
}
float MortgageCalc::setLoan(void)
{ //returns loan amt to private member
return loan;
}
float MortgageCalc::setIntrest(void)
{ //returns interest amt to private member
return interest;
}
float MortgageCalc::setYears(void)
{ //returns years to private member
return years;
}
float MortgageCalc::getMonthlyDue()
{ //simple cal to output monthly
monthlyDue = (loan * ((interest/100) / 12) * term) / (term - 1);
return monthlyDue;
}
float MortgageCalc::getTotalDue()
{
totalDue = (getMonthlyDue() * (years * 12));
return totalDue;
}
float MortgageCalc::getTotalInt()
{
totalInt = (getTotalDue() - loan);
return totalInt;
}
int main()
{
MortgageCalc mort1;
int choice = 0;
int years = 0;
double term(0) , loan(0), interest(0);
cout << "Enter the total loan amount on your mortgage loan: $"; //established loan variable
cin >> loan;
cout << "Enter the interest rate (in whole #'s only): "; //establishes interest rate variable
cin >> interest;
cout << "Enter the length of the loan in years: "; //establishes term of payments
cin >> years;
mort1.setData(loan, interest, years);
while (choice != 3) //loop for menu options and clean function exit
{
cout << endl;
cout << "Program to Calculate Mortgage Payments" << endl <<
"1. Monthly Payment" << endl <<
"2. Total Payment" << endl <<
"3. Exit" << endl << endl <<
"Enter an option above: ";
cin >> choice;
if (choice == 1)
cout << "Monthly payment due is " << mort1.getMonthlyDue() << "." << endl;
else if (choice == 2)
cout << "Total amount for entire loan payments plus interest is $" << mort1.getTotalDue() << "." << endl <<
"Total Interest Paid for this loan amount $" << mort1.getTotalInt() << "." << endl;
}
return 0;
}