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 48RQE
T F When an if statement is nested in the el se part of another statement, as in an if / else if, the only time the inner if is executed is when the expression of the outer if is true.
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9. Let L₁=L(ab*aa), L₂=L(a*bba*). Find a regular expression for (L₁ UL2)*L2.
10. Show that the language
is not regular.
L= {a":n≥1}
11. Show a derivation tree for the string aabbbb with the grammar
S→ABλ,
A→aB,
B→Sb.
Give a verbal description of the language generated by this grammar.
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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