Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
3rd Edition
ISBN: 9780134038179
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 21PC
Compound Interest
When a bank account pays compound interest, it pays interest not only on the principal amount that was deposited into the account, but also on the interest that has accumulated over time. Suppose you want to deposit some money into a savings account, and let the account earn compound interest for a certain number of years. The formula for calculating the balance of the account after a specified number of years is:
The terms in the formula are:
A is the amount of money in the account after the specified number of years.
P is the principal amount that was originally deposited into the account.
r is the annual interest rate.
n is the number of times per year that the interest is compounded.
t is the specified number of years.
Write a
- The amount of principal originally deposited into the account
- The annual interest rate paid by the account
- The number of times per year that the interest is compounded (For example, if interest is compounded monthly, enter 12. If interest is compounded quarterly, enter 4.)
- The number of years the account will be left to earn interest
Once the input data has been entered, the program should calculate and display the amount of money that will be in the account after the specified number of years.
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Salary Calculator
Create a program that computes the salary based on an employee's hourly wage and hours worked. Note that employees may work for fractions of an hour, e.g. 1 and a half hours (1.5 hours). Use the following formulas:
Less than or equal to 40 hours worked
hourly wage * hours worked
Over 40, but less than or equal to 65 hours worked
(hourly wage * 40) + (hours worked - 40) * (hourly wage * 1.5)
Over 65 hours worked
(hourly wage * 40) + (hourly wage * 1.5) * 25 + (hours worked - 65) * hourly wage * 2
Also make sure that the hourly wage and hours worked are positive. Otherwise, display the error message: "Invalid input".
Please see the sample outputs below to guide the design of your program.
main.cc file
#include <iomanip>
#include <iostream>
int main() {
// TODO: accept user input to store the hourly wage and hours worked.
// Then, include the header file at the top of this file so you can
// call your function that computes a…
3. The formula for determining compound interest is:
A represents the amount to earn; P is the principle that is initially invested; r is the interest rate earned; n is the number of times the interest is compounded; and t is the number of time periods for the investment. Write a program that prompts the user to enter P, r, n and t. The program should output the amount earned on the investment. 4. Look up the Pythagorean theorem if you are not already familiar with it. Use the following formula to solve for c in the formula: c = √a2 + b2. Use the proper functions from the cmath header file. Be sure to output the result.l
Open notes and open book.
Suppose you have a certain amount of money in a savings account that earnscompound monthly interest, and you want to calculate the amount that you willhave after a specific number of months. The formula is as follows:f = p * (1 + i)^t• f is the future value of the account after the specified time period.• p is the present value of the account.• i is the monthly interest rate.• t is the number of months.Write a program that takes the account's present value, monthly interest rate,and the number of months that the money will be left in the account as threeinputs from the user. The program should pass these values to a function thatreturns the future value of the account after the specified number of months.the program should print the account's future value.
Chapter 2 Solutions
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
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