I need help with this C++ program, It's a loan calculator. What I want for my code is to have a 3rd option in the main menu to show multiple choice. Where the program would ask the user if they can solve for monthly loan, loan amount, length of loan and interest rate. Let A be monthly payment and then ask the user to solve for monthly payment, if the user is wrong try again if right then move on to the next question. Same thing, let B be loan amount, if the user is wrong try again if right then move on to the next question. I want at least four multiple choice questions. Here is my code so far and I have some errors: Here is some more information on this.

Examples: In the programming tutorial, you would add a tutorial on conditional expressions. You can then add simple multiple choice questions to test the user's understanding of the concepts. You might also want to break the tutorial into sections, and use conditional expressions to ask the user which tutorial they wanted to see (i.e., variable declaration, input/output, conditional expressions, etc.).

For the loan calculator, the program might ask the user if he or she wants to solve for monthly payment, loan amount, length of loan, or interest rate. The program would then ask for the required information and solve for the remaining value.

// Course project, financial calculator.cpp : Defines the entry point for the console application.

//

#include "stdafx.h"

#include

#include

using namespace std;

int nMonths = 0;

float loanAmount;

float totalPaid = 0.0f;

void process() {

float interestRate;

float monthlyPayment;

cout << "What is the amount of the loan?:$";

cin >> loanAmount; cin.ignore();

cout << "What is the interest rate on the loan?:$";

cin >> interestRate; interestRate /= 100; cin.ignore();

cout << "What is the desired monthly payment?:$";

cin >> monthlyPayment; cin.ignore();

while (monthlyPayment < loanAmount * interestRate / 12) {

cout << "Not a valid amount, Amount must be greater than $";

cout << (loanAmount * interestRate / 12) << endl;

cout << "What is the desired monthly payment amount? $";

cin >> monthlyPayment; cin.ignore();

}

float interestToAdd = 0.0f;

float remaining = loanAmount;

float toAdd = 0.0f;

cout << endl;

cout << "Month" << " (Interest Added)" << " (Amount Paid)" << " (Debt Remaining)" << endl;

while (remaining > monthlyPayment) {

interestToAdd = remaining * interestRate / 12;

nMonths++;

remaining += interestToAdd;

if (remaining > monthlyPayment) {

toAdd = monthlyPayment;

}

else {

toAdd = remaining;

}

cout << nMonths << " $" << interestToAdd << " $" << toAdd

<< " $" << remaining << endl;

totalPaid += toAdd;

remaining -= toAdd;

}

}

void displayResult() {

cout << endl << "Statistics about loan. " << endl;

cout << "Initial loan amount: $" << loanAmount << endl;

cout << "Total amount paid: $" << totalPaid << endl;

cout << "Time to pay off loan: " << nMonths << endl;

cout << "Overpay percentage: " << (totalPaid / loanAmount) << endl;

cin.ignore();

}

void multipleChoice() {

cout << "Welcome to the multiple choice part of the program, please choose a letter: " << endl;

cout << "A: Monthly payment " << endl;

cout << "B: Loan amount " << endl;

cout << "C: Length of loan " << endl;

cout << "D: Interest rate " << end;

int ch;

cin >> ch

switch (ch)

{

case 'A':

chooseletterA();

cout << "First question: Please solve for monthly payment. " << endl;

break;

case 'B':

chooseletterB();

cout << "Second question: Please solve for loan amount. " << endl;

break;

case 'C':

chooseletterC();

cout << "Third question: Please solve for length of loan. " << endl;

break;

case 'D':

chooseletterD();

cout << "Forth question: Please solve for interest rate. " << endl;

break;

}

int amount;

cin >> amount;

}

int main()}

int ch;

do {

cout << endl << "************************MENU***************************" << endl;

cout << "1. Process Loan" << endl;

cout << "2. Display Result" << endl;

cout << "3. Multiple Choice" << endl;

cout << "Enter your choice : ";

cin >> ch;

switch (ch) {

case 1:

process();

break;

case 2:

displayResult();

break;

case 3:

multipleChoice();

break;

default:

cout << "Entered Wrong Keyword.... Re-enter Again";

break;

} while (ch != '1' || ch != '2' || ch != '3');

system("pause");

}