Starting Out with C++: Early Objects
8th Edition
ISBN: 9780133360929
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: Addison-Wesley
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 15PC
Population
In a population, the birth rate is the percentage increase of the population due to births, and the death rate is the percentage decrease of the population due to deaths. Write a
- The starting size of a population (minimum 2)
- The annual birth rate
- The annual death rate
- The number of years to display (minimum 1)
The program should then display the starting population and the projected population at the end of each year. It should use a function that calculates and returns the projected new size of the population after a year. The formula is
- N is the new population size,
- P is the previous population size,
- B is the birth rate,
- and D is the death rate.
Annual birth rate and death rate are the typical number of births and deaths in a year per 1,000 people, expressed as a decimal. So, for example, if there are normally about 32 births and 26 deaths per 1,000 people in a given population, the birth rate would be .032 and the death rate would be .026.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
One foot equals 12 inches. Write a function, using python, named feet_to_inches that accepts a number of feet as an argument and returns the number of inches in that many feet. Use the function in a programs, using python, that prompts the user to enter a number of feet then displays the number of inches in that many feet.
A bullet train slows from a speed of 200 mi/hr to 150 mi/hr in one minute.
Write a computer program that calculates the bullet train’s constant rate of
acceleration and determines how long the bullet train will take to come to rest,
given an initial speed of 200 mi/hr. (Hint: Use the equation
a =
vf - vi
t
where a is acceleration, t is time interval, vi is initial velocity, and vf is final
velocity.) Write and call a function that displays instructions to the program
user and a function that computes a, given t, vf, and vi.
using c programming language
change.py
Create a program, change.py, that has a function that takes 5 arguments thatcorrespond to the number of $1 dollar bills, quarters, dimes, nickels, andpennies, respectively. Calculate the total value of that change, and print "Thetotal value of your change is $x" where x is equal to the total value.
Chapter 6 Solutions
Starting Out with C++: Early Objects
Ch. 6.2 - Prob. 6.1CPCh. 6.2 - Prob. 6.2CPCh. 6.2 - Prob. 6.3CPCh. 6.2 - Prob. 6.4CPCh. 6.5 - Indicate which of the following is the function...Ch. 6.5 - Prob. 6.6CPCh. 6.5 - Prob. 6.7CPCh. 6.5 - Prob. 6.8CPCh. 6.5 - What is the output of the following program?...Ch. 6.5 - The following program skeleton asks for the number...
Ch. 6.8 - How many return values may a function have?Ch. 6.8 - Write a header for a function named distance. The...Ch. 6.8 - Write a header for a function named days. The...Ch. 6.8 - Prob. 6.14CPCh. 6.8 - Write a header for a function named lightYears....Ch. 6.11 - What is the difference between a static local...Ch. 6.11 - Prob. 6.17CPCh. 6.11 - Prob. 6.18CPCh. 6.13 - Prob. 6.19CPCh. 6.13 - Write the prototype and header for a function...Ch. 6.13 - Write the prototype and header for a function...Ch. 6.13 - What is the output of the following program?...Ch. 6.13 - The following program asks the user to enter two...Ch. 6.15 - Is it required that overloaded functions have...Ch. 6.15 - What is the output of the following program code?...Ch. 6.15 - What is the output of the following program code?...Ch. 6 - The ____ is the part of a function definition that...Ch. 6 - If a function doesnt return a value, the word...Ch. 6 - If function showValue has the following header:...Ch. 6 - Either a functions ____ or its ____ must precede...Ch. 6 - Values that are sent into a function are called...Ch. 6 - Special variables that hold copies of function...Ch. 6 - When only a copy of an argument is passed to a...Ch. 6 - A(n)_____ eliminates the need to place a function...Ch. 6 - A(n)_____ variable is defined inside a function...Ch. 6 - ____ variables are defined outside all functions...Ch. 6 - _____ variables provide an easy way to share large...Ch. 6 - Unless you explicitly initialize numeric global...Ch. 6 - If a function has a local variable with the same...Ch. 6 - ______ local variables retain their value between...Ch. 6 - The _____ statement causes a function to end...Ch. 6 - ______ arguments are passed to parameters...Ch. 6 - When a function uses a mixture of parameters with...Ch. 6 - Prob. 18RQECh. 6 - When used as parameters, _______ variables allow a...Ch. 6 - Reference variables are defined like regular...Ch. 6 - Reference variables allow arguments to be passed...Ch. 6 - The ________ function causes a program to...Ch. 6 - Two or more functions may have the same name, as...Ch. 6 - What is the advantage of breaking your...Ch. 6 - What is the difference between an argument and a...Ch. 6 - When a function accepts multiple arguments, does...Ch. 6 - What does it mean to overload a function?Ch. 6 - If you are writing a function that accepts an...Ch. 6 - Give an example of where an argument should he...Ch. 6 - How do you return a value from a function?Ch. 6 - Prob. 31RQECh. 6 - Prob. 32RQECh. 6 - The following statement calls a function named...Ch. 6 - A program contains the following function, int...Ch. 6 - Write a function, named timesTen, that accepts an...Ch. 6 - A program contains the following function. void...Ch. 6 - Write a function named getNumber, which uses a...Ch. 6 - Write a function named biggest that receives three...Ch. 6 - Prob. 39RQECh. 6 - Markup Write a program that asks the user to enter...Ch. 6 - Celsius Temperature Table The formula for...Ch. 6 - Falling Distance The following formula can be used...Ch. 6 - Kinetic Energy In physics, an object that is in...Ch. 6 - Winning Division Write a program that determines...Ch. 6 - Prob. 6PCCh. 6 - Lowest Score Drop Write a program that calculates...Ch. 6 - Star Search A particular talent competition has...Ch. 6 - isPrime Function A prime number is an integer...Ch. 6 - Present Value Suppose you want to deposit a...Ch. 6 - Stock Profit The profit from the sale of a stock...Ch. 6 - Multiple Stock Sales Use the function that you...Ch. 6 - Order Status The Middletown Wholesale Copper Wire...Ch. 6 - Overloaded Hospital Write a program that computes...Ch. 6 - Population In a population, the birth rate is the...Ch. 6 - Transient Population Modify Programming Challenge...Ch. 6 - Using FilesHospital Report Modify Programming...Ch. 6 - Group Project 20. Using FilesTravel Expenses This...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Explain the different aspects of the cost of a programming language.
Concepts of Programming Languages (11th Edition)
Write four different Java statements that each add 1 to integer variable x.
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Write a program that acts as a simple printing calculator. The program should allow the user to type in express...
Programming in C
Describe the primary differences between the conceptual and logical data models.
Modern Database Management (12th Edition)
What is the difference between the instructions 0x15AB and 0x25AB in Vole?
Computer Science: An Overview (12th Edition)
Convert the following for loop to a while loop: for (int x = 50; x 0; x--) { System.out.println(x + seconds t...
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- 4. During each summer, John and Jessica grow vegetables in their backyard and buy seeds and fertilizer from a local nursery. The nursery carries different types of vegetable fertilizers in various bag sizes. When buying a particular fertilizer, they want to know the price of the fertilizer per pound and the cost of fertilizing per square foot. The following program prompts the user to enter the size of the fertilizer bag, in pounds, the cost of the bag, and the area, in square feet, that can be covered by the bag. The program should output the desired result. However, the program contains logic errors. Find and correct the logic errors so that the program works properly. // Logic errors. #include #include using namespace std; int main() { double costs double area; double bagsize; cout > bagsize; cout > cost; cout > area; cout << endl; cout << "The cost of the fertilizer per pound is: $" << bagsize / cost << endl; cout << "The cost of fertilizing per square foot is: $" << area / cost << endl; return 0; }arrow_forward(Statics) A beam’s second moment of inertia, also known as its area moment of inertia, is used to determine its resistance to bending and deflection. For a rectangular beam (see Figure 6.6), the second moment of inertia is given by this formula: Ibh3/12 I is the second moment of inertia (m4). b is the base (m). h is the height (m). a. Using this formula, write a function called beamMoment() that accepts two double- precision numbers as parameters (one for the base and one for the height), calculates the corresponding second moment of inertia, and displays the result. b. Include the function written in Exercise 4a in a working program. Make sure your function is called from main(). Test the function by passing various data to it.arrow_forward(General math) a. Write a function named rightTriangle() that accepts the lengths of two sides of a right triangle as the arguments a and b. The subroutine should determine and return the hypotenuse, c, of the triangle. (Hint:UsePythagorastheorem,c2=a2+b2.) b. Include the function written for Exercise 4a in a working program. The main() function should call rightTriangle() correctly and display the value the function returns.arrow_forward
- (Numerical) a. The following is an extremely useful programming algorithm for rounding a real number to n decimal places: Step 1: Multiply the number by 10n Step 2: Add 0.5 Step 3: Delete the fractional part of the result Step 4: Divide by 10n For example, using this algorithm to round the number 78.374625 to three decimal places yields: Step1:78.374625103=78374.625 Step2:78374.625+0.5=78375.125 Step3:Retainingtheintegerpart=78375Step4:78375dividedby103=78.375 Using this algorithm, write a C++ function that accepts a user-entered value and returns the result rounded to two decimal places. b. Enter, compile, and run the program written for Exercise 11a.arrow_forwardMark the following statements as true or false: a. To use a predefined function in a program, you need to know only the name of the function and how to use it. (1) b. A value-returning function returns only one value. (2, 3) c. Parameters allow you to use different values each time the function is called. (2, 7, 9) d. When a return statement executes in a user-defined function, the function immediately exits. (3, 4) e. A value-returning function returns only integer values. (4) f. A variable name cannot be passed to a value parameter. (3, 6) g. If a C++ function does not use parameters, parentheses around the empty parameter list are still required. (2, 3, 6) h. In C + + , the names of the corresponding formal and actual parameters must be the same. (3, 4, 6) i. A function that changes the value of a reference parameter also changes the value of the actual parameter. (7) j. Whenever the value of a reference parameter changes, the value of the actual parameter changes. (7) k. In C++, function definitions can be nested; that is, the definition of one function can be enclosed in the body of another function. (9) l. Using global variables in a program is a better programming style than using local variables, because extra variables can be avoided. (10) m. In a program, global constants are as dangerous as global variables. (10) n. The memory for a static variable remains allocated between function calls. (11)arrow_forward(Numerical) Heron’s formula for the area, A, of a triangle with sides of length a, b, and c is A=s(sa)(sb)(sc) where s=(a+b+c)2 Write, test, and execute a function that accepts the values of a, b, and c as parameters from a calling function, and then calculates the values of sand[s(sa)(sb)(sc)]. If this quantity is positive, the function calculates A. If the quantity is negative, a, b, and c do not form a triangle, and the function should set A=1. The value of A should be returned by the function.arrow_forward
- (Statistics) This is the formula for the standard normal deviate, z, used in statistical applications: z=(X)/ X is a single value. refers to an average value. refers to a standard deviation. Using this formula, you need to write a program that calculates and displays the value of the standard normal deviate when X=85.3,=80,and=4. a. For this programming problem, how many outputs are required? b. How many inputs does this problem have? c. Determine a formula for converting input items into output items. d. Test the formula written for Exercise 7c, using the data given in the problem.arrow_forwardA bank charges $10 per month, plus the following check fees for a commercial checking account: $0.10 each for less than 20 checks $0.08 each for 20 through 39 checks $0.06 each for 40 through 59 checks $0.04 each for 60 or more checks Write a function BankCharges() that allows the user to enter the number of checks written and computes and displays the bank’s service fees for the month. All checks for the month are assigned the same charge, based on the total number of checks written during the month. Use the following test data to determine whether the application is calculating properly. In each case, the customer is charged only a single rate, based on the total number of checks. Your solution should clearly show the function. Customer Number of Checks Bank Charges Nancy 15 Lilian 25 Arianna 45 Ben 75arrow_forward(Time in Seconds) Write a function that takes the time as three integer arguments (forhours, minutes, and seconds) and returns the number of seconds since the last time the clock “struck12.” Use this function to calculate the amount of time in seconds between two times, both of whichare within one 12-hour cycle of the clockarrow_forward
- In physics, an object that is in motion is said to have kinetic energy. The following formula can be used to determine a moving object’s kinetic energy:KE=12mv2The variables in the formula are as follows: KE is the kinetic energy, m is the object’s mass in kilograms, and v is the object’s velocity in meters per second. Write a function named kinetic_energy that accepts an object’s mass (in kilograms) and velocity (in meters per second) as arguments. The function should return the amount of kinetic energy that the object has. Write a program that asks the user to enter values for mass andvelocity, then calls the kinetic_energy function to get the object’s kinetic energy.arrow_forward(Reversing Digits) Write a function that takes an integer value and returns the number withits digits reversed. For example, given the number 7631, the function should return 1367.arrow_forward20.1 LAB: Count evens Write a function count_evens() that has four integer parameters, and returns the count of parameters where the value is an even number (i.e. evenly divisible by 2). Ex: If the four parameters are: 1 22 11 40 then the returned count will be: 2 Hint: Use the modulo operator % to determine if each number is even or odd. Your program must define the function:count_evens(num1, num2, num3, num4) Use Python to help me with this.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
functions in c programming | categories of function |; Author: Education 4U;https://www.youtube.com/watch?v=puIK6kHcuqA;License: Standard YouTube License, CC-BY