Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 12MC
Validation loops are also known as _________.
a. error traps
b. doomsday loops
c. error avoidance loops
d. defensive loops
Expert Solution & Answer
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Students have asked these similar questions
Fill the missing code to ensure that the loop repeats 10 times
for (int x = 0;_________; x++)
{
}
//Some codes...
• Use a while loop
• Use multiple loop controlling conditions
• Use a boolean method
• Use the increment operator
• Extra credit: Reuse earlier code and call two methods from main
Details:
This assignment will be completed using the Eclipse IDE. Cut and paste your code from Eclipse into the Assignment text window.
This is another password program. In this case, your code is simply going to ask for a username and password, and then check the input against four users. The program will give the user three tries to input the correct username-password combination.
There will be four acceptable user-password combinations:
• alpha-alpha1
• beta-beta1
• gamma-gamma1
• delta - delta1
If the user types in one of the correct username-password combinations, then the program will output: "Login successful." Here are a couple of example runs (but your code needs to work for all four user-password combinations):
Username: beta
Type your current password: beta1
Login successful.
Username: delta
Type…
Using a Sentinel Value to Control a while Loop in Java
Summary
In this lab, you write a while loop that uses a sentinel value to control a loop in a Java program that has been provided. You also write the statements that make up the body of the loop.
The source code file already contains the necessary variable declarations and output statements. Each theater patron enters a value from 0 to 4 indicating the number of stars the patron awards to the Guide’s featured movie of the week. The program executes continuously until the theater manager enters a negative number to quit. At the end of the program, you should display the average star rating for the movie.
Instructions
Ensure the file named MovieGuide.java is open.
Write the while loop using a sentinel value to control the loop, and write the statements that make up the body of the loop to calculate the average star rating.
Execute the program by clicking Run.
Input the following: 0, 3, 4, 4, 1, 1, 2, -1
Check that the…
Chapter 4 Solutions
Starting Out with Python (4th Edition)
Ch. 4.1 - What is a repetition structure?Ch. 4.1 - What is a condition-controlled loop?Ch. 4.1 - What is a count-controlled loop?Ch. 4.2 - What is a loop iteration?Ch. 4.2 - Does the while loop test its condition before or...Ch. 4.2 - How many times will 'Hello world' be printed in...Ch. 4.2 - What is an infinite loop?Ch. 4.3 - Rewrite the following code so it calls the range...Ch. 4.3 - What will the following code display? For number...Ch. 4.3 - What will the following code display? for number...
Ch. 4.3 - What will the following code display? for number...Ch. 4.3 - What will the following code display? for number...Ch. 4.4 - Prob. 13CPCh. 4.4 - Should an accumulator be initialized to any...Ch. 4.4 - What will the following code display? total - 0...Ch. 4.4 - What will the following code display? number 1 =...Ch. 4.4 - Rewrite the following statements using augmented...Ch. 4.5 - Prob. 18CPCh. 4.5 - Why should you take care to choose a distinctive...Ch. 4.6 - What does the phrase garbage in, garbage out mean?Ch. 4.6 - Give a general description of the input validation...Ch. 4.6 - Describe the steps that are generally taken when...Ch. 4.6 - Prob. 23CPCh. 4.6 - If the input that is read by the priming read is...Ch. 4 - A_________-controlled loop uses a true/false...Ch. 4 - A _____-controlled loop repeats a specific number...Ch. 4 - Each repetition of a loop is known as a(n) a cycle...Ch. 4 - The while loop is a _______ type of loop. a....Ch. 4 - A(n) ______ loop has no way of ending and repeats...Ch. 4 - The -= operator is an example of a(n) _________...Ch. 4 - Prob. 7MCCh. 4 - A(n) ____________ is a special value that signals...Ch. 4 - Prob. 9MCCh. 4 - The integrity of a programs output is only as good...Ch. 4 - The input operation that appears just before a...Ch. 4 - Validation loops are also known as _________. a....Ch. 4 - A condition-controlled loop always repeats a...Ch. 4 - The while loop is a pretest loop.Ch. 4 - The following statement subtracts 1 from x: x = x ...Ch. 4 - It is not necessary to initialize accumulator...Ch. 4 - In a nested loop, the inner loop goes through all...Ch. 4 - To calculate the total number of iterations of a...Ch. 4 - The process of input validation works as follows:...Ch. 4 - What is a condition-controlled loop?Ch. 4 - What is a count-controlled loop?Ch. 4 - What is an infinite loop? Write the code for an...Ch. 4 - Why is it critical that accumulator variables are...Ch. 4 - What is the advantage of using a sentinel?Ch. 4 - Prob. 6SACh. 4 - What does the phrase garbage in, garbage out mean?Ch. 4 - Give a general description of the input validation...Ch. 4 - Write a while loop that lets the user enter a...Ch. 4 - Write a while loop that asks the user to enter two...Ch. 4 - Write a for loop that displays the following set...Ch. 4 - Write a loop that asks the user to enter a number....Ch. 4 - Write a loop that calculates the total of the...Ch. 4 - Rewrite the following statements using augmented...Ch. 4 - Write a set of nested loops that display 10 rows...Ch. 4 - Write code that prompts the user to enter a...Ch. 4 - Write code that prompts the user to enter a number...Ch. 4 - Bug Collector The Bug Collector Problem A bug...Ch. 4 - Calories Burned Running on a particular treadmill...Ch. 4 - Budget Analysis Write a program that asks the user...Ch. 4 - Distance Traveled The distance a vehicle travels...Ch. 4 - Average Rainfall Write a program that uses nested...Ch. 4 - Celsius to Fahrenheit Table Write a program that...Ch. 4 - Pennies for Pay Write a program that calculates...Ch. 4 - Sum of Numbers Write a program with a loop that...Ch. 4 - Ocean Levels Assuming the ocean's level is...Ch. 4 - Tuition Increase At one college, the tuition for a...Ch. 4 - Weight Loss If a moderately active person cuts...Ch. 4 - Calculating the Factorial of a Number In...Ch. 4 - Population Write a program that predicts the...Ch. 4 - Prob. 14PECh. 4 - Prob. 15PECh. 4 - Turtle Graphics: Repeating Squares In this...Ch. 4 - Turtle Graphics: Star Pattern Use a loop with the...Ch. 4 - Turtle Graphics: Hypnotic Pattern Use a loop with...Ch. 4 - Turtle Graphics: STOP Sign In this chapter, you...
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- GameAA.java This program allows a user to play “Rock, paper, scissors” against the computer. Use a random number generator to generate the computer’s selection. Your code should ask the user what they choose and then report the computer’s choice and who wins. This code should run in a loop and should end when the user chooses to end. (Make sure your random number generator chooses a new number each time the loop runs.) ALSO, your code should keep track of the number of times you win, the number of times you lose, and the number of ties. When the user exits, these statistics should be displayed. (Consider using a different counter variable to keep track of each value.) Make sure your code accounts for inputs that are out of the acceptable range. For example, if you ask the user to type 0 to end, 1 for Rock, 2 for Paper, and 3 for Scissors, your code should tell the user that they entered an invalid choice if they select 4. (You do not have to account for users who crash the…arrow_forwardFill-in-the-Blank A loop that evaluates its test expression after each repetition is a(n) __________ loop.arrow_forwardAdderAA.java This program will allow the user to select how many numbers they’d like to add together, and then enter those numbers to be totaled. The program should run in a continuous loop unless the user enters zero at the menu (in this case the program should end). A negative menu answer should give an “invalid response.” Your code should catch input mismatches. There will be multiple loops and probably an if/else structure required to accomplish this. You cannot use a break statement or any other non-logical way such as System.exit to exit a loop. This will result in a loss of major points. The example below is one continuous run of the program. Your program should run the test case exactly as it appears below, and should work on any other case in general. Output Example This program will add numbers together. Tell me how many numbers you’d like to add or type 0 to end the program. >>>3 Enter your number: 4.0 Enter your number: 3.2 Enter your number: -1.0 The sum of your…arrow_forward
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