Starting Out with Programming Logic and Design (4th Edition)
4th Edition
ISBN: 9780133985078
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Expert Solution & Answer
Chapter 3.4, Problem 3.18CP
Explanation of Solution
Difference between pass by value and pass by reference:
| Pass by value | Pass by reference: |
|
A copy of the argument’s value which is passed into the parameter variable is referred as pass by value. |
Pass by reference allows the argument to passed into a special type of parameter called reference variable. |
|
In the pass by value, the called module creates new variables to store the value of the arguments passed to it. |
The reference variables permit the module to access the original argument of the parameter. |
|
The changes made in the formal parameters do not reflect on the actual parameters... |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Static Variable: a variable whose lifetime is the lifetime of the program (static int x;)
Dynamic Variable: It is a pointer to a variable (int *x;)
Is this comparison true?
If an argument is given into a reference parameter, it will be treated as if it were a reference parameter.
What is the difference between a reference and a pointer?
Chapter 3 Solutions
Starting Out with Programming Logic and Design (4th Edition)
Ch. 3.1 - What is a module?Ch. 3.1 - Prob. 3.2CPCh. 3.1 - Prob. 3.3CPCh. 3.1 - Prob. 3.4CPCh. 3.1 - Prob. 3.5CPCh. 3.2 - In most languages, a module definition has what...Ch. 3.2 - Prob. 3.7CPCh. 3.2 - Prob. 3.8CPCh. 3.2 - Prob. 3.9CPCh. 3.3 - What is a local variable? How is access to a local...
Ch. 3.3 - What is a variables scope?Ch. 3.3 - Prob. 3.12CPCh. 3.3 - Prob. 3.13CPCh. 3.4 - Prob. 3.14CPCh. 3.4 - What are the variables that receive pieces of data...Ch. 3.4 - Prob. 3.16CPCh. 3.4 - Prob. 3.17CPCh. 3.4 - Prob. 3.18CPCh. 3.5 - What is the scope of a global variable?Ch. 3.5 - Give one good reason that you should not use...Ch. 3.5 - Prob. 3.21CPCh. 3 - A group of statements that exist within a program...Ch. 3 - Prob. 2MCCh. 3 - The first line of a module definition is known as...Ch. 3 - Prob. 4MCCh. 3 - Prob. 5MCCh. 3 - A design technique that programmers use to break...Ch. 3 - Prob. 7MCCh. 3 - A _____ is a variable that is declared inside a...Ch. 3 - A(n) ____ is the part of a program in which a...Ch. 3 - A(n) ____ is a piece of data that is sent into a...Ch. 3 - A(n) ____ is a special variable that receives a...Ch. 3 - When _____, only a copy of the argument's value is...Ch. 3 - When ____, the module can modify the argument in...Ch. 3 - A variable that is visible to every module in the...Ch. 3 - When possible, you should avoid using _____...Ch. 3 - The phrase divide and conquer means that all of...Ch. 3 - Prob. 2TFCh. 3 - Module names should be as short as possible.Ch. 3 - Prob. 4TFCh. 3 - A flowchart shows the hierarchical relationships...Ch. 3 - Prob. 6TFCh. 3 - A statement in one module can access a local...Ch. 3 - In most programming languages, you cannot have two...Ch. 3 - Programming languages typically require that...Ch. 3 - Most languages do not allow you to write modules...Ch. 3 - When an argument is passed by reference, the...Ch. 3 - Prob. 12TFCh. 3 - Prob. 1SACh. 3 - Prob. 2SACh. 3 - Prob. 3SACh. 3 - What is a local variable? What statements are able...Ch. 3 - In most languages, where does a local variables...Ch. 3 - What is the difference between passing an argument...Ch. 3 - Prob. 7SACh. 3 - Design a module named timesTen. The module should...Ch. 3 - Examine the following pseudocode module header,...Ch. 3 - Look at the following pseudocode module header:...Ch. 3 - Assume that a pseudocode program contains the...Ch. 3 - Design a module named getNumber, which uses a...Ch. 3 - What will the following pseudocode program...Ch. 3 - What will the following pseudocode program...Ch. 3 - Find the error in the following pseudocode. Module...Ch. 3 - Find the error in the following pseudocode. Module...Ch. 3 - Find the potential error in the following...Ch. 3 - Prob. 4DECh. 3 - Kilometer Converter Design a modular program that...Ch. 3 - Prob. 2PECh. 3 - How Much Insurance? Many financial experts advise...Ch. 3 - Prob. 4PECh. 3 - Prob. 5PECh. 3 - Prob. 6PECh. 3 - Calories from Fat and Carbohydrates A nutritionist...Ch. 3 - Prob. 8PECh. 3 - Prob. 9PECh. 3 - Monthly Sales Tax A retail company must file a...Ch. 3 - Prob. 11PE
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- How are arguments passed by value or by reference?arrow_forwardDescribe Operations on Pointer Variables.arrow_forwardLook at the following code. int x = 7; int *ptr = &x;What will be displayed if you send the expression *iptr to cout? What happens if you send the expression ptr to cout?arrow_forward
- C++ beginnerarrow_forwardLowest Score Drop Write a program that calculates the average of a group of test scores, where the lowest score in the group is dropped. It should use the following functions: void getScore() should ask the user for a test score, store it in a reference parameter variable, and validate it. This function should be called by main once for each of the five scores to be entered. void calcAverage() should calculate and display the average of the four highest scores. This function should be called just once by main and should be passed the five scores. int findLowest() should find and return the lowest of the five scores passed to it. It should be called by calcAverage, which uses the function to determine which of the five scores to drop. Input Validation: Do not accept test scores lower than 0 or higher than 100.arrow_forward# Python 3 def printFunction(num1, num2): num3 = num1 + num2 return num3print(num3) Explanation: Here, num3 is the local variable that is defined in the scope of the function and when it is used outside the function, an error occurs. Print(num3) is the statement which is outside the scope of the function. So, when this statement is executed, there is no variable named num3 to be printed, so it gives an error. The error that occurs is : NameError: name 'num3' is not defined Construct a function that takes an argument. Give the function parameter a unique name. Show what happens when you try to use that parameter name outside the function. Explain the results. Show what happens when a variable defined outside a function has the same name as a local variable inside a function. Explain what happens to the value of each variable as the program runs.arrow_forward
- Please help me in c++ languagearrow_forwardIn C/C++, True or False: A function that changes the value of a variable passed by reference also changes the value of the original variable. A variable's type helps define the amount of memory it takes to hold a value of that type.arrow_forwardpointers as Arguments:In the C programming language there is no pass-by-reference syntax to passa variable by reference to a function. Instead a variable is passed by pointer(just to be confusing, sometimes passing by pointer is referred to as pass byreference). This Practice Program asks you to do the same thing as C.Here is the header for a function that takes as input a pointer to an integer:1. void addOne (int ∗ptrNum )Complete the function so it adds one to the integer referenced by ptrNum.Write a main function where an integer variable is defined, give it an initialvalue, call addOne, and output the variable. It should be incremented by 1.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Programming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage Learning
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
.2: Function Parameters and Arguments - p5.js Tutorial; Author: The Coding Train;https://www.youtube.com/watch?v=zkc417YapfE;License: Standard Youtube License