Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)

4th Edition

ISBN: 9780134787961

Author: Tony Gaddis, Godfrey Muganda

Publisher: PEARSON

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Concept explainers

Types of Loop

Loops are the elements of programming in which a part of code is repeated a particular number of times. Loop executes the series of statements many times till the conditional statement becomes false.

Loops

Any task which is repeated more than one time is called a loop. Basically, loops can be divided into three types as while, do-while and for loop. There are so many programming languages like C, C++, JAVA, PYTHON, and many more where looping statements ca…

While Loop

Loop is a feature in the programming language. It helps us to execute a set of instructions regularly. The block of code executes until some conditions provided within that Loop are true.

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Textbook Question

Chapter 4, Problem 8PC

Average Rainfall

Write a program that uses nested loops to collect data and calculate the average rainfall over a period of years. First the program should ask for the number of years. The outer loop will iterate once for each year. The inner loop will iterate 12 times, once for each month. Each iteration of the inner loop will ask the user for the inches of rainfall for that month. After all iterations, the program should display the number of months, the total inches of rainfall, and the average rainfall per month for the entire period.

Input Validation: Do not accept a number less than 1 for the number of years. Do not accept negative numbers for the monthly rainfall.

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Chapter 4, Problem 7PC

Chapter 4, Problem 9PC

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Chapter 4 Solutions

Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)

Ch. 4.1 - What will the following program segments display?...Ch. 4.2 - How many times will Hello World be printed in the...Ch. 4.2 - How many times will I love Java programming! be...Ch. 4.3 - Write an input validation loop that asks the user...Ch. 4.3 - Write an input validation loop that asks the user...Ch. 4.3 - Write an input validation loop that asks the user...Ch. 4.5 - Name the three expressions that appear inside the...Ch. 4.5 - You want to write a for loop that displays I love...Ch. 4.5 - What will the following program segments display?...Ch. 4.5 - Write a for loop that displays your name 10 times.

Ch. 4.5 - Write a for loop that displays all of the odd...Ch. 4.5 - Write a for loop that displays every fifth number,...Ch. 4.6 - Write a for loop that repeats seven times, asking...Ch. 4.6 - In the following program segment, which variable...Ch. 4.6 - Prob. 4.15CP Ch. 4.10 - What is the difference between an input file and...Ch. 4.10 - What import statement will you need in a program...Ch. 4.10 - What class do you use to write data to a file?Ch. 4.10 - Write code that does the following: opens a file...Ch. 4.10 - What classes do you use to read data from a file?Ch. 4.10 - Write code that does the following: opens a file...Ch. 4.10 - You are opening an existing file for output. How...Ch. 4.10 - What clause must you write in the header of a...Ch. 4.11 - Assume x is an int variable, and rand references a...Ch. 4.11 - Assume x is an int variable, and rand references a...Ch. 4.11 - Assume x is an int variable, and rand references a...Ch. 4.11 - Assume x is a double variable, and rand references...Ch. 4 - Prob. 1MC Ch. 4 - Prob. 2MC Ch. 4 - Prob. 3MC Ch. 4 - What is each repetition of a loop known as? a....Ch. 4 - This is a variable that controls the number of...Ch. 4 - The while loop is this type of loop. a. pretest b....Ch. 4 - The do-while loop is this type of loop. a. pretest...Ch. 4 - The for loop is this type of loop. a. pretest b....Ch. 4 - This type of loop has no way of ending and repeats...Ch. 4 - This type of loop always executes at least once....Ch. 4 - This expression is executed by the for loop only...Ch. 4 - Prob. 12MC Ch. 4 - This is a special value that signals when there...Ch. 4 - To open a file for writing, you use the following...Ch. 4 - To open a file for reading, you use the following...Ch. 4 - Prob. 16MC Ch. 4 - This class allows you to use the print and println...Ch. 4 - This class allows you to read a line from a file....Ch. 4 - True or False: The while loop is a pretest loop.Ch. 4 - True or False: The do-while loop is a pretest...Ch. 4 - True or False: The for loop is a posttest loop.Ch. 4 - True or False: It is not necessary to initialize...Ch. 4 - True or False: One limitation of the for loop is...Ch. 4 - True or False: A variable may be defined in the...Ch. 4 - True or False: In a nested loop, the inner loop...Ch. 4 - True or False: To calculate the total number of...Ch. 4 - // This code contains ERRORS! // It adds two...Ch. 4 - Prob. 2FTE Ch. 4 - // This code contains ERRORS! int choice, num1,...Ch. 4 - Prob. 4FTE Ch. 4 - Write a while loop that lets the user enter a...Ch. 4 - Write a do-whi1e loop that asks the user to enter...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 for loop that calculates the total of the...Ch. 4 - Write a nested loop that displays 10 rows of #...Ch. 4 - Convert the while loop in the following code to a...Ch. 4 - Convert the do-while loop in the following code to...Ch. 4 - Convert the following while loop to a for loop:...Ch. 4 - Convert the following for loop to a while loop:...Ch. 4 - Write an input validation loop that asks the user...Ch. 4 - Write an input validation loop that asks the user...Ch. 4 - Write nested loops to draw this pattern:Ch. 4 - Write nested loops to draw this pattern: ## # # #...Ch. 4 - Complete the following program so it displays a...Ch. 4 - Complete the following program so it performs the...Ch. 4 - Prob. 17AW Ch. 4 - Prob. 18AW Ch. 4 - Modify the code you wrote in Question 18 so it...Ch. 4 - Write code that opens a file named NumberList.txt...Ch. 4 - Prob. 1SA Ch. 4 - Why should you indent the statements in the body...Ch. 4 - Describe the difference between pretest loops and...Ch. 4 - Why are the statements in the body of a loop...Ch. 4 - Describe the difference between the while loop and...Ch. 4 - Which loop should you use in situations where you...Ch. 4 - Which loop should you use in situations where you...Ch. 4 - Which loop should you use when you know the number...Ch. 4 - Why is it critical that accumulator variables are...Ch. 4 - What is an infinite loop? Write the code for an...Ch. 4 - Prob. 11SA Ch. 4 - What does it mean to let the user control a loop?Ch. 4 - What is the advantage of using a sentinel?Ch. 4 - Prob. 14SA Ch. 4 - Describe a programming problem requiring the use...Ch. 4 - How does a file buffer increase a programs...Ch. 4 - Why should a program close a file when its...Ch. 4 - What is a files read position? Where is the read...Ch. 4 - When writing data to a file, what is the...Ch. 4 - What does the Scanner classs hasNext method return...Ch. 4 - What is a potential error that can occur when a...Ch. 4 - Prob. 22SA Ch. 4 - How do you open a file so that new data will be...Ch. 4 - Sum of Numbers Write a program that asks the user...Ch. 4 - Distance Traveled The distance a vehicle travels...Ch. 4 - Distance File Modify the program you wrote for...Ch. 4 - Pennies for Pay Write a program that calculates...Ch. 4 - Prob. 5PC Ch. 4 - File Letter Counter Write a program that asks the...Ch. 4 - Hotel Occupancy A hotels occupancy rate is...Ch. 4 - Average Rainfall Write a program that uses nested...Ch. 4 - Population Write a program that will predict the...Ch. 4 - Largest and Smallest Write a program with a loop...Ch. 4 - Celsius to Fahrenheit Table Write a program that...Ch. 4 - Bar Chart Write a program that asks the user to...Ch. 4 - File Head Display Write a program that asks the...Ch. 4 - Line Numbers Write a program that asks the user...Ch. 4 - Uppercase File Converter Write a program that asks...Ch. 4 - Budget Analysis Write a program that asks the user...Ch. 4 - Random Number Guessing Game Write a program that...Ch. 4 - Random Number Guessing Game Enhancement Enhance...Ch. 4 - ESP Game Write a program that tests your ESP...Ch. 4 - Square Display Write a program that asks the user...Ch. 4 - Dice Game Write a program that plays a simple dice...Ch. 4 - Prob. 22PC Ch. 4 - Personal Web Page Generator Write a program that...

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