Question

C++

18. Savings Account Balance Write a program that calculates the balance of a savings account at the end of a three month period. It should ask the user for the starting balance and the annual interest rate. A loop should then iterate once for every month in the period, performing the following A) Ask the user for the total amount deposited into the account during that month. Do not accept negative numbers. This amount should be added to the balance. Ask the user for the total amount withdrawn from the account during that month. Do not accept negative numbers or numbers greater than the balance after the deposits for the month have been added in. B) C) Calculate the interest for that month. The monthly interest rate is the annual interest rate divided by 12. Multiply the monthly interest rate by the average of that month's starting and ending balance to get the interest amount for the month. This amount should be added to the balance. After the last iteration, the program should display a final report that includes the follow ing information: . starting balance at the beginning of the three-month period. . total deposits made during the three months total withdrawals made during the three months . total interest posted to the account during the three months . final balance.

Answer 1

#include <iostream>

using namespace std;

int main() {

    double startingBalance, interestRate;
    double monthStartBalance, monthEndBalance;
    double balance;
    double total_deposits = 0, total_withdrawls = 0, total_interest = 0;

    cout << "Enter starting balance : ";
    cin >> startingBalance;
    while(startingBalance < 0) {
        cout << "Invalid.\nEnter starting balance : ";
        cin >> startingBalance;
    }

    cout << "Enter annual interest rate : ";
    cin >> interestRate;
    while(interestRate < 0) {
        cout << "Invalid.\nEnter annual interest rate : ";
        cin >> interestRate;
    }

    balance = startingBalance;

    for(int month=1; month<=3; month++) {

        monthStartBalance = balance;

        double amount_deposited, amount_withdrawn;
        cout << "Enter amount deposited in month " << month << ": ";
        cin >> amount_deposited;
        while(amount_deposited < 0) {
            cout << "Invalid.\nEnter amount deposited in month " << month << ": ";
            cin >> amount_deposited;
        }

        total_deposits += amount_deposited;
        balance += amount_deposited;

        cout << "Enter amount withdrawn in month " << month << ": ";
        cin >> amount_withdrawn;
        while(amount_withdrawn > balance || amount_withdrawn < 0) {
            cout << "Invalid.\nEnter amount withdrawn in month " << month << ": ";
            cin >> amount_withdrawn;
        }

        total_withdrawls += amount_withdrawn;
        balance -= amount_withdrawn;

        monthEndBalance = monthStartBalance + amount_deposited - amount_withdrawn;

        double avg = (monthStartBalance + monthEndBalance)/2.0;
        double interest = avg * interestRate / 1200;

        total_interest += interest;

        balance += interest;
    }

    cout << "\n\nStarting balance: $" << startingBalance << endl;
    cout << "Total depositis: $" << total_deposits << endl;
    cout << "Total withdrawls: $" << total_withdrawls << endl;
    cout << "Total interest posted: $" << total_interest << endl;
    cout << "Final Balance: $" << balance << endl;

}

$saved gcc version 4.6.3 monthstartBalancebalance; 30 31 32 double amount deposited, amount withdraun; cout << Enter amount deposited in month << month << cin >>amount_deposited; while(amount_deposited < 0) Enter starting balance 1806 Enter annual interest rate: Enter amount deposited in month 1: 200e Enter amount withdrawn in month 1: 6000 Enter amount deposited in month 2: 3000 Enter amount withdrawn in month 2: 10臼 Enter amount deposited in month 3: 1000 Enter amount withdrawn in month 3 1500 3-4 35 36 3/ cout <<Invalid.\nEnter amount deposited in month << month << : ; cin amount deposited; Starting balance: $4000 Total depositis: $6800 Total withdrawls: $856e Total interest posted: $31.8895 Final Balance: $1531.89 total depositsamount deposited; balance amount deposited; 42 cout く< Enter amount withdrawn in month “ << month << “, ; cin >>amount_withdrawn; while(amount_withdrawn balance amount withdrawn <0) [ 43 45 cout <<Invalid.nEnter amount withdrawn in month << month <<:; cin amount withdrawn; 48 19 50 51 52 total withdrawls amount withdrawn; balancc -amount_withdrawn; monthE ndBalance monthstartBalance amount_deposited amount_withdrawn; double avg (monthstartBalance + monthEndBalance)/2-0; 56 57 58 double interest - avg intere stRate / 1200; total interest interest; balance interest; 60$

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