Question

c++

Redefine CDAccount from Display 10.1 so that it is a class rather than a structure. Use the same member variables as in Display 10.1 but make them private. Include member functions for each of the following: one to return the initial balance, one to return the balance at maturity, one to return the interest rate, and one to return the term. Include a constructor that sets all of the member variables to any specified values, as well as a default constructor. Embed your class definition in a test program.

10.1 display

#include <iostream>
3 using namespace std;
4 //Structure for a bank certificate of deposit:
5 struct CDAccount
6 {
7 double balance;
8 double interestRate;
9 int term; //months until maturity
10 };
11
12
13 void getData(CDAccount& theAccount);
14 //Postcondition: theAccount.balance and theAccount.interestRate
15 //have been given values that the user entered at the keyboard.
16
17
18 int main( )
19 {
20 CDAccount account;
21 getData(account);
22
23 double rateFraction, interest;
24 rateFraction = account.interestRate / 100.0;
25 interest = account.balance * rateFraction * (account.term / 12.0);
26 account.balance = account.balance + interest;
27
28 cout.setf(ios::fixed);
29 cout.setf(ios::showpoint);
30 cout.precision(2);
31 cout << "When your CD matures in "
32 << account.term << " months,\n"
33 << "it will have a balance of $"
34 << account.balance << endl;
35 return 0;
36 }
37
38 //Uses iostream:
39 void getData(CDAccount& theAccount)
40 {
41 cout << "Enter account balance: $";
42 cin >> theAccount.balance;
43 cout << "Enter account interest rate: ";
44 cin >> theAccount.interestRate;
45 cout << "Enter the number of months until maturity\n"
46 << "(must be 12 or fewer months): ";
47 cin >> theAccount.term;
48 }

Answer 1

If you have any doubts, please give me comment...

#include <iostream>

using namespace std;

class CDAccount

{

    private:

        double balance;

        double interestRate;

        int term; //months until maturity

    public:

        CDAccount(){

            balance = 0;

            interestRate = 0.0;

            term = 0;

        }

        CDAccount(double bal, double interest, int _term){

            balance = bal;

            interestRate = interest;

            term = _term;

        }

        double getInitialBalance(){

            return balance;

        }

        double getBalance(){

            double rateFraction, interest;

            rateFraction = interestRate / 100.0;

            interest = balance * rateFraction * (term / 12.0);

            return balance + interest;

        }

        double getInterestRate(){

            return interestRate;

        }

        int getTerm(){

            return term;

        }

};

void getData(double &balance, double &interestRate, int &terms);

int main()

{

    double balance, interestRate;

    int terms;

    getData(balance, interestRate, terms);

    CDAccount account(balance, interestRate, terms);

    cout.setf(ios::fixed);

    cout.setf(ios::showpoint);

    cout.precision(2);

    cout << "When your CD matures in "

         << account.getTerm() << " months,\n"

         << "it will have a balance of $"

         << account.getBalance() << endl;

    return 0;

}

//Uses iostream:

void getData(double &balance, double &interestRate, int &terms)

{

    cout << "Enter account balance: $";

    cin >> balance;

    cout << "Enter account interest rate: ";

    cin >> interestRate;

    cout << "Enter the number of months until maturity\n"

         << "(must be 12 or fewer months): ";

    cin >> terms;

}