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 4, Problem 19PC
Spectral Analysis
If a scientist knows the wavelength of an electromagnetic wave, he or she can determine what type of radiation it is. Write a
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Task 1Description
let's consider a case when you need a lot of coffee. Maybe you're hosting a party with a lot of guests! In these circumstances, it's better to make preparations in advance.So, we will ask a user to enter the desired amount of coffee, in cups. Given this, you can adjust the program by calculating how much water, coffee, and milk are necessary to make the specified amount of coffee.Of course, all this coffee is not needed right now, so at this stage, the coffee machine doesn't actually make any coffee yet.
ObjectivesLet's break the task into several steps:First, read the numbers of coffee drinks from the input.Figure out how much of each ingredient the machine will need. Note that one cup of coffee made on this coffee machine contains 200 ml of water, 50 ml of milk, and 15 g of coffee beans.Output the required ingredient amounts back to the user.
ExamplesThe greater-than symbol followed by space (> ) represents the user input. Notice that…
Microwaves / Radio Waves
If a scientist knows the wavelength of an electromagnetic wave she can determine what type of
radiation it is. Write a program that asks for the wavelength in meters of an electromagnetic
wave and then displays what that wave is according to the following chart. (For example, a
wave with a wavelength of 1E-10 meters would be an X-ray.)
1x 10-11
1 x 10-8
4 x 10-7
7x 10-7
1x 10-3
1 x 10-2
Gamma Rays.
X Rays
Ultraviolet
Visible Light
Infrared
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.
Chapter 4 Solutions
Starting Out with C++ from Control Structures to Objects (9th Edition)
Ch. 4.1 - Prob. 4.1CPCh. 4.1 - Indicate whether the following statements about...Ch. 4.1 - Prob. 4.3CPCh. 4.1 - Prob. 4.4CPCh. 4.2 - Write an if statement that performs the following...Ch. 4.2 - Write an if statement that performs the following...Ch. 4.2 - Write an if statement that multiplies payRate by...Ch. 4.2 - True or False: Both of the following i f...Ch. 4.2 - True or false: Both of the following if statements...Ch. 4.3 - Write an if statement that performs the following...
Ch. 4.3 - The following code segment is syntactically...Ch. 4.4 - True or false: The following if/else statements...Ch. 4.4 - Write an if/else statement that assigns 1 to x if...Ch. 4.4 - Write an if/else statement that assigns 0.10 to...Ch. 4.5 - If you executed the following code, what would it...Ch. 4.6 - What will the following code display? int funny =...Ch. 4.6 - The following code is used in a bookstore program...Ch. 4.9 - Prob. 4.18CPCh. 4.9 - Assume the variables a = 2, b = 4, and c = 6....Ch. 4.9 - Write an if statement that prints the message The...Ch. 4.9 - Write an if statement that prints the message The...Ch. 4.12 - Prob. 4.22CPCh. 4.12 - Indicate whether each of the following relational...Ch. 4.13 - Rewrite the following if/else statements as...Ch. 4.13 - The following statements use conditional...Ch. 4.13 - Prob. 4.26CPCh. 4.14 - Explain why you cannot convert the following if...Ch. 4.14 - What is wrong with the following switch statement?...Ch. 4.14 - What will the following program display? #include...Ch. 4.14 - Complete the following program skeleton by writing...Ch. 4.14 - Rewrite the following program. Use a switch...Ch. 4 - Describe the difference between the if /else if...Ch. 4 - In an if/else if statement, what is the purpose of...Ch. 4 - What is a flag and how does it work?Ch. 4 - Can an if statement test expressions other than...Ch. 4 - Briefly describe how the operator works.Ch. 4 - Briefly describe how the | | operator works.Ch. 4 - Why are the relational operators called...Ch. 4 - Why do most programmers indent the conditionally...Ch. 4 - An expression using the greater-than, less-than,...Ch. 4 - A relational expression is either ______ or...Ch. 4 - Prob. 11RQECh. 4 - The if statement regards an expression with the...Ch. 4 - The if statement regards an expression with a...Ch. 4 - For an if statement to conditionally execute a...Ch. 4 - In an if/else statement, the if part executes its...Ch. 4 - The trailing else in an if/else if statement has a...Ch. 4 - The if/else if statement is actually a form of the...Ch. 4 - If the subexpression on the left of the _________...Ch. 4 - If the subexpression on the left of the __________...Ch. 4 - The ________ logical operator has higher...Ch. 4 - The logical operators have _________...Ch. 4 - The _________ logical operator works best when...Ch. 4 - The __________ logical operator works best when...Ch. 4 - A variable with _________ scope is only visible...Ch. 4 - Prob. 25RQECh. 4 - An expression using the conditional operator is...Ch. 4 - The expression that is tested by a switch...Ch. 4 - Prob. 28RQECh. 4 - A program will fall through a case section if it...Ch. 4 - What value will be stored in the variable t after...Ch. 4 - Write an if statement that assigns 100 to x when y...Ch. 4 - Write an if/else statement that assigns 0 to x...Ch. 4 - Using the following chart, write an if/else if...Ch. 4 - Write an if statement that sets the variable hours...Ch. 4 - Write nested if statements that perform the...Ch. 4 - Write an if statement that prints the message The...Ch. 4 - Write an if statement that prints the message The...Ch. 4 - Write an if statement that prints the message The...Ch. 4 - Assume str1 and str2 are string objects that have...Ch. 4 - Convert the following if/else if statement into a...Ch. 4 - Match the conditional expression with the if /else...Ch. 4 - T F The = operator and the == operator perform the...Ch. 4 - Prob. 43RQECh. 4 - T F A conditionally executed statement should be...Ch. 4 - T F All lines in a block should be indented one...Ch. 4 - T F Its safe to assume that all uninitialized...Ch. 4 - T F When an if statement is nested in the if part...Ch. 4 - T F When an if statement is nested in the el se...Ch. 4 - T F The scope of a variable is limited to the...Ch. 4 - T F You can use the relational operators to...Ch. 4 - T F x ! = y is the same as (x y || x y)Ch. 4 - T F y x is the same as x = yCh. 4 - T F x = y is the same as (x y x = y)Ch. 4 - T F x == 5 || y 3Ch. 4 - T F 7 = x z 4Ch. 4 - T F 2 != y z != 4Ch. 4 - T F x = 0 || x = yCh. 4 - Each of the following programs has errors. Find as...Ch. 4 - // This program divides a user-supplied number by...Ch. 4 - // This program uses an if/else if statement to...Ch. 4 - // This program uses a switch-case statement to...Ch. 4 - The following statement should determine if x is...Ch. 4 - The following statement should determine if count...Ch. 4 - The following statement should determine if count...Ch. 4 - The following statement should assign 0 to z if a...Ch. 4 - Minimum/Maximum Write a program that asks the user...Ch. 4 - Roman Numeral Converter Write a program that asks...Ch. 4 - Magic Dates The date June 10, 1960 is special...Ch. 4 - Areas of Rectangles The area of a rectangle is the...Ch. 4 - Body Mass Index Write a program that calculates...Ch. 4 - Mass and Weight Scientists measure an objects mass...Ch. 4 - Time Calculator Write a program that asks the user...Ch. 4 - Color Mixer The colors red, blue, and yellow are...Ch. 4 - Change for a Dollar Game Create a change-counting...Ch. 4 - Days in a Month Write a program that asks the user...Ch. 4 - Math Tutor This is a modification of Programming...Ch. 4 - Software Sales A software company sells a package...Ch. 4 - Book Club Points Serendipity Booksellers has a...Ch. 4 - Bank Charges A bank charges 10 per month plus the...Ch. 4 - Shipping Charges The Fast Freight Shipping Company...Ch. 4 - Running the Race Write a program that asks for the...Ch. 4 - Personal Best Write a program that asks for the...Ch. 4 - Fat Gram Calculator Write a program that asks for...Ch. 4 - Spectral Analysis If a scientist knows the...Ch. 4 - Prob. 20PCCh. 4 - The Speed of Sound in Gases When sound travels...Ch. 4 - Freezing and Boiling Points The following table...Ch. 4 - Prob. 23PCCh. 4 - Long-Distance Calls A long-distance carrier...Ch. 4 - Mobile Service Provider A mobile phone service...Ch. 4 - Mobile Service Provider, Part 2 Modify the Program...Ch. 4 - Wi-Fi Diagnostic Tree Figure 4-11 shows a...Ch. 4 - Restaurant Selector You have a group of friends...
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