Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 5.7, Problem 29CP
When the random module is imported, what does it use as a seed value for random number generation?
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typedef struct { long tipo; struct { char nome[50]; char email[40]; } dados;} MsgStruct;
int main() { int msg_id, status; msg_id = msgget(1000, 0600 | IPC_CREAT); exit_on_error(msg_id, "Creation/Connection"); MsgStruct msg; msg.tipo = 5; strcpy(msg.dados.nome, "Pedro Silva"); strcpy(msg.dados.email, "pedro@sapo.pt"); status = msgsnd(msg_id, &msg, sizeof(msg.dados), 0); exit_on_error(status, "Send"); printf("Message sent!\n");}
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,
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B→Sb.
Give a verbal description of the language generated by this grammar.
Chapter 5 Solutions
Starting Out with Python (4th Edition)
Ch. 5.1 - What is a function?Ch. 5.1 - Prob. 2CPCh. 5.1 - How do functions help you reuse code in a program?Ch. 5.1 - How can functions make the development of multiple...Ch. 5.1 - How can functions make it easier for programs to...Ch. 5.2 - A function definition has what two parts?Ch. 5.2 - What does the phrase calling a function mean?Ch. 5.2 - When a function is executing, what happens when...Ch. 5.2 - Prob. 9CPCh. 5.4 - What is a local variable? How is access to a local...
Ch. 5.4 - What is a variables scope?Ch. 5.4 - Prob. 12CPCh. 5.5 - What are the pieces of data that are passed into a...Ch. 5.5 - What are the variables that receive pieces of data...Ch. 5.5 - Prob. 15CPCh. 5.5 - When a parameter is changed, does this affect the...Ch. 5.5 - The following statements call a function named...Ch. 5.6 - What is the scope of a global variable?Ch. 5.6 - Give one good reason that you should not use...Ch. 5.6 - Prob. 20CPCh. 5.7 - How does a value-returning function differ from...Ch. 5.7 - Prob. 22CPCh. 5.7 - Prob. 23CPCh. 5.7 - What does the following statement do? x =...Ch. 5.7 - What does the following statement do? print...Ch. 5.7 - What does the following statement do? print...Ch. 5.7 - What does the following statement do? print...Ch. 5.7 - What does the following statement do? print...Ch. 5.7 - When the random module is imported, what does it...Ch. 5.7 - What happens if the same seed value is always used...Ch. 5.8 - Prob. 31CPCh. 5.8 - Look at the following function definition: def...Ch. 5.8 - What is a Boolean function?Ch. 5.9 - What import statement do you need to write in a...Ch. 5.9 - Write a statement that uses a math module function...Ch. 5.9 - Write a statement that uses a math module function...Ch. 5 - A group of statements that exist within a program...Ch. 5 - A design technique that helps to reduce the...Ch. 5 - The first line of a function definition is known...Ch. 5 - You___a function to execute it. a. define b. call...Ch. 5 - A design technique that programmers use to break...Ch. 5 - Prob. 6MCCh. 5 - A ______ is a variable that is created inside a...Ch. 5 - Prob. 8MCCh. 5 - Prob. 9MCCh. 5 - Prob. 10MCCh. 5 - A variable that is visible to every function in a...Ch. 5 - Prob. 12MCCh. 5 - This is a prewritten function that is built into a...Ch. 5 - This standard library function returns a random...Ch. 5 - This standard library function returns a random...Ch. 5 - This standard library function returns a random...Ch. 5 - This statement causes a function to end and sends...Ch. 5 - This is a design tool that describes the input,...Ch. 5 - This type of function returns either True or...Ch. 5 - This is a math module function. a. derivative b....Ch. 5 - The phrase "divide and conquer" means that all of...Ch. 5 - Functions make it easier for programmers to work...Ch. 5 - Function names should be as short as possible.Ch. 5 - Calling a function and defining a function mean...Ch. 5 - A flowchart shows the hierarchical relationships...Ch. 5 - A hierarchy chart does not show the steps that are...Ch. 5 - A statement in one function can access a local...Ch. 5 - In Python, you cannot write functions that accept...Ch. 5 - In Python, you can specify which parameter an...Ch. 5 - You cannot have both keyword arguments and...Ch. 5 - Some library functions are built into the Python...Ch. 5 - You do not need to have an import statement in a...Ch. 5 - Complex mathematical expressions can sometimes be...Ch. 5 - A function in Python can return more than one...Ch. 5 - IPO charts provide only brief descriptions of a...Ch. 5 - How do functions help you to reuse code in a...Ch. 5 - Name and describe the two parts of a function...Ch. 5 - When a function is executing, what happens when...Ch. 5 - What is a local variable? What statements are able...Ch. 5 - What is a local variable's scope?Ch. 5 - Prob. 6SACh. 5 - Suppose you want to select a random number from...Ch. 5 - What statement do you have to have in a...Ch. 5 - What three things are listed on an IPO chart?Ch. 5 - What is a Boolean function?Ch. 5 - Prob. 11SACh. 5 - Write a function named times_ten. The function...Ch. 5 - Examine the following function header, then write...Ch. 5 - Look at the following function header: der...Ch. 5 - What will the following program display? def main...Ch. 5 - Look at the following function definition def...Ch. 5 - Write a statement that generates a random number...Ch. 5 - The following statement calls a function named...Ch. 5 - A program contains the following function...Ch. 5 - Write a function named times_ten that accepts a...Ch. 5 - Write a function named get_first_name that asks...Ch. 5 - Kilometer Converter The Kilometer Converter...Ch. 5 - Sales Tax Program Refactoring Programming Exercise...Ch. 5 - How Much Insurance? Many financial experts advise...Ch. 5 - Automobile Costs Write a program that asks the...Ch. 5 - Property Tax A county collects property taxes on...Ch. 5 - Calories from Fat and Carbohydrates A nutritionist...Ch. 5 - Stadium Seating There are three seating categories...Ch. 5 - Paint Job Estimator A painting company has...Ch. 5 - Monthly Sales Tax A retail company must file a...Ch. 5 - Feet to Inches The Feet to Inches Problem One foot...Ch. 5 - Math Quiz Write a program that gives simple math...Ch. 5 - Maximum of Two Values Write a function named max...Ch. 5 - Falling Distance When an object is falling because...Ch. 5 - Kinetic Energy In physics, an object that is in...Ch. 5 - Test Average and Grade Write a program that asks...Ch. 5 - Odd/Even Counter In this chapter, you saw an...Ch. 5 - Prime Numbers A prime number is a number that is...Ch. 5 - Prime Number List This exercise assumes that you...Ch. 5 - Future Value Suppose you have a certain amount of...Ch. 5 - Random Number Guessing Game Write a program that...Ch. 5 - Rock, Paper, Scissors Game Write a program that...Ch. 5 - Turtle Graphics: Triangle Function Write a...Ch. 5 - Turtle Graphics: Modular Snowman Write a program...Ch. 5 - Prob. 24PECh. 5 - Turtle Graphics: Checkerboard Write a turtle...Ch. 5 - Turtle Graphics: City Skyline Write a turtle...
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