Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 18PC
Interest Earned
Assuming there are no deposits other than the original investment, the balance in a savings account after one year may be calculated as
Principal is the balance in the savings account, Rate is the interest rate, and T is the number of times the interest is compounded during a year (T is 4 if the interest is compounded quarterly).
Write a
| Interest Rate: | 4.25% |
| Times Compounded: | 12 |
| Principal: | $1000.00 |
| Interest: | $43.34 |
| Amount in Savings: | $1043.34 |
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Interest Rates Savings accounts state an interest rate and a compounding period. If theamount deposited is P, the stated interest rate is r, and interest is compounded m timesper year, then the balance in the account after one year is P⋅(1+rm)m. For instance, if$1000 is deposited at 3% interest compounded quarterly (that is, 4 times per year), thenthe balance after one year is1000⋅(1+.034)4=1000⋅1.00754=$1,030.34.Interest rates with different compounding periods cannot be compared directly.The concept of APY (annual percentage yield) must be used to make the comparison. TheAPY for a stated interest rate r compounded m times per year is defined byAPY=(1+rm)m−1.(The APY is the simple interest rate that yields the same amount of interest after oneyear as the compounded annual rate of interest.) Write a program to compare interestrates offered by two different banks and determine the most favorable interest rate. SeeFig. 4.24.
Running the program
Your program should take 5 arguments: start annual years return inflation
where
start is the initial investment amount
annual is the amount that is added to the investment every year
years is the number of years that the investment is held
return is the annual investment return expressed as a percentage
inflation is the annual inflation rate expressed as a percentage
So, to calculate the future and present value of $1000 investment after 10 years where you
add $100 every year with a 7% return and 2% inflation, you give the following arguments
and get this output:
$ ./fv 1000 100 10 7 2
Future Value: $3445.51
Present Value: $2826.52
Writing the code
Starter code is provided for you below
int main(int arge, char **argv )
{
int a, n
double value, present, I, is
value= atof(argv[1]);
a = atoi (argv [2]);
natoi (argv[3]);
r = atof (argv[4])/100;
i = atof(argv[5])/100;
// TODO write your code here
printf("Future Value: $%.2f\n", value)
printf("Present Value: $%.2f\n",…
Running the program
Your program should take 5 arguments: start annual years return inflation
where
start is the initial investment amount
annual is the amount that is added to the investment every year
years is the number of years that the investment is held
return is the annual investment return expressed as a percentage
inflation is the annual inflation rate expressed as a percentage
So, to calculate the future and present value of $1000 investment after 10 years where you
add $100 every year with a 7% return and 2% inflation, you give the following arguments
and get this output:
$ ./fv 1000 100 10 7 2
Future Value: $3445.51
Present Value: $2826.52
Writing the code
Starter code is provided for you below
int main(int arge, char **argv )
{
int a, n
double value, present, I, is
value= atof (argv[1]);
a = atoi (argv[2]);
natoi (argv[3]);
r = atof (argv[4])/100;
i = atof(argv[5])/100;
// TODO write your code here
printf ("Future Value: $%.2f\n", value)
printf("Present Value: $%.2f\n",…
Chapter 3 Solutions
Starting Out with C++ from Control Structures to Objects (9th Edition)
Ch. 3.1 - Prob. 3.1CPCh. 3.1 - Prob. 3.2CPCh. 3.1 - Assume value is an integer variable. If the user...Ch. 3.1 - A program has the following variable definitions....Ch. 3.1 - Prob. 3.5CPCh. 3.1 - Complete the following program skeleton so it asks...Ch. 3.2 - Complete the table below by determining the value...Ch. 3.2 - Write C++ expressions for the following algebraic...Ch. 3.2 - Prob. 3.9CPCh. 3.2 - Complete the following program skeleton so it...
Ch. 3.5 - Assume the following variable definitions: int a =...Ch. 3.5 - Complete the following program skeleton so it asks...Ch. 3.5 - Prob. 3.13CPCh. 3.6 - Write a multiple assignment statement that assigns...Ch. 3.6 - Write statements using combined assignment...Ch. 3.6 - Prob. 3.16CPCh. 3.7 - Write cout statements with stream manipulators...Ch. 3.7 - Prob. 3.18CPCh. 3.7 - The following program skeleton asks for an angle...Ch. 3.9 - Prob. 3.20CPCh. 3.9 - Assume the variables angle1 and angle2 hold angles...Ch. 3.9 - To find the cube root (the third root) of a...Ch. 3.9 - The cosecant of the angle a is 1sina Write a...Ch. 3 - Assume the following variables are defined: int...Ch. 3 - Prob. 2RQECh. 3 - Prob. 3RQECh. 3 - Complete the following table by determining the...Ch. 3 - Write C++ expressions for the following algebraic...Ch. 3 - Assume a program has the following variable...Ch. 3 - Assume a program has the following variable...Ch. 3 - Assume qty and salesReps are both integers. Use a...Ch. 3 - Rewrite the following variable definition so that...Ch. 3 - Complete the following table by providing...Ch. 3 - Write a multiple assignment statement that can be...Ch. 3 - Write a cout statement so the variable divSales is...Ch. 3 - Write a cout statement so the variable totalAge is...Ch. 3 - Prob. 14RQECh. 3 - The__________ library function returns the cosine...Ch. 3 - The ___________ library function returns the sine...Ch. 3 - The ________ library function returns the tangent...Ch. 3 - The __________ library function returns the...Ch. 3 - The _________ library functionreturns the...Ch. 3 - The _________ library function returns the natural...Ch. 3 - Prob. 21RQECh. 3 - The _______ library function returns the value of...Ch. 3 - The _________ libraryfunction returns the square...Ch. 3 - The ________ file must beincluded in aprogramthat...Ch. 3 - A retail store grants its customers a maximum...Ch. 3 - Write a pseudocode algorithm for a program that...Ch. 3 - Write a pseudocode algorithm for a program that...Ch. 3 - using namespace std; int main () { double number1,...Ch. 3 - #include iostream using namespace std; int main()...Ch. 3 - #include iostream; using namespace std; int main()...Ch. 3 - #include iostream; using namespace std; main { int...Ch. 3 - #inc1ude iostream; using namespace std; main {...Ch. 3 - #inc1ude iostream; using namespace std; int main()...Ch. 3 - What will each of the following programs display?...Ch. 3 - #include iostream using namespace std; int main()...Ch. 3 - (Assume the user enters George Washington.)...Ch. 3 - (Assume the user enters 36720152. Use a...Ch. 3 - Miles per Gallon Write a program that calculates a...Ch. 3 - Stadium Seating There are three seating categories...Ch. 3 - Test Average Write a program that asks for five...Ch. 3 - Average Rainfall Write a program that calculates...Ch. 3 - Male and Female Percentages Write a program that...Ch. 3 - Ingredient Adjuster A cookie recipe calls for the...Ch. 3 - Box Office A movie theater only keeps a percentage...Ch. 3 - How Many Widgets? The Yukon Widget Company...Ch. 3 - How Many Calories? A bag of cookies holds 30...Ch. 3 - How Much Insurance? Many financial experts advise...Ch. 3 - Automobile Costs Write a program that asks the...Ch. 3 - Celsius to Fahrenheit Write a program that...Ch. 3 - Currency Write a program that will convert U.S....Ch. 3 - Monthly Sales Tax A retail company must file a...Ch. 3 - Property Tax A county collects property taxes on...Ch. 3 - Senior Citizen Property Tax Madison County...Ch. 3 - Math Tutor Write a program that can be used as a...Ch. 3 - Interest Earned Assuming there are no deposits...Ch. 3 - Monthly Payments The monthly payment on a loan may...Ch. 3 - Pizza Pi Joes Pizza Palace needs a program to...Ch. 3 - How Many Pizzas? Modify the program you wrote in...Ch. 3 - Angle Calculator Write a program that asks the...Ch. 3 - Stock Transaction Program Last month Joe purchased...Ch. 3 - Planting Grapevines A vineyard owner is planting...Ch. 3 - Word Game Write a program that plays a word game...
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