Enhance your program from Exercise 20 by first telling the user

the minimum monthly payment and then prompting the user to enter the monthly payment.
Your last payment might be more than the remaining loan amount and interest on it. In this case, output the actual amount of the last payment. Also, output the total interest paid.

#include

#include

using namespace std;

int main ()

{

double loanAmount;

double interestRate;

double interestRatePerMonth;

double monthlyPayment;

double paymentPrincipal;

int months;

cout << fixed << showpoint;

cout << setprecision(2);

cout << "Enter the loan amount: ";

cin >> loanAmount;

cout << endl;

cout << "Enter the interest rate per year: ";

cin >> interestRate;

cout << endl;

interestRatePerMonth = (interestRate / 100) / 12;

cout << "Enter the monthly payment: ";

cin >> monthlyPayment;

if (monthlyPayment <= loanAmount * interestRatePerMonth)

{

cout << "Monthly payment is too low. The loan cannot be repaid."

<< endl;

return 1;

}

months = 0;

while (loanAmount > 0)

{

paymentPrincipal = monthlyPayment - (loanAmount * interestRatePerMonth);

loanAmount = loanAmount - paymentPrincipal;

months++;

}

cout << "It will take " << months << " months to repay the loan."

<< endl;

return 0;

}