Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 2AW
Write a while loop that asks the user to enter two numbers. The numbers should be added and the sum displayed. The loop should ask the user if he or she wishes to perform the operation again. If so, the loop should repeat, otherwise it should terminate.
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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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- (Misc. application) Four experiments are performed, and each experiment has six test results. The results for each experiment are given in the following list. Write a program using a nested loop to compute and display the average of the test results for each experiment. 1stexperimentresults:23.23116.92725.428.62ndexperimentresults:34.845.227.936.833.439.43rdexperimentresults:19.416.810.220.818.913.44thexperimentresults:36.93949.245.142.750.6arrow_forwardTrue or False It is possible that the body of a while loop might not execute at all.arrow_forwardWrite a while loop that will let the user enter a series of integer values and compute the total values and number of values entered. An odd number will stop the loop. Display the number of iterations and the total of the values after the loop terminates. for Loop Write a for loop to display all numbers from 13 - 93 inclusive, ending in 3. Write a for loop to display a string entered by the user backwards. do Loop Write a do .. loop for the random number dice problem from Chap Three. Add a counter variable that is used to count the number of times this code is executed in the loop and stops after 5 times. roll = rand.nextInt(6) + 1; System.out.println(" Roll = " + roll); ctr++; using javaarrow_forward
- An insect population doubles every generation. Write a while loop that iterates numGeneration times. Inside the while loop, write a statement that doubles currentPopulation in each iteration of the while loop.arrow_forwardThe purpose of using a loop is to Select one: A. Repeat operation(s) many times B. Repeat operation(s) many time and make decision C. make decision D. None of the option mentionedarrow_forwardWrite a do.. while loop that keeps asking the user to enter a positive number until they do enter a positive number.arrow_forward
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Control Structures - while loop - do-while loop - for loop - Goto - break - continue statements; Author: EzEd Channel;https://www.youtube.com/watch?v=21l11_9Osd0;License: Standard YouTube License, CC-BY