Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 8: Problem 6

C++ has no array _________ checking, which means you can inadvertently store data past the end of an array.

Short Answer

Expert verified
Short Answer: The missing word is "boundary," referring to the lack of automatic array boundary checking in C++. This means that C++ does not verify if the index used in an array operation falls within the valid range of indices (0 to the array length minus 1). Without boundary checking, storing or accessing data outside the valid range of an array can lead to unpredictable behavior and potential issues, such as overwriting other data, segmentation faults, or crashes.

Step by step solution

01

Identify the missing word

The missing word is "boundary" (C++ has no array boundary checking).
02

Explain array boundary checking

Array boundary checking means verifying the index used in an array operation is within the valid range of indices (0 to the array length minus 1). Some programming languages automatically perform array boundary checking which ensures that you cannot access or store data outside the array's valid range, therefore preventing any issues. However, C++ does not perform this check by default.
03

Describe the consequences of missing array boundary checking

When a programming language lacks array boundary checking, like C++, accessing or storing data beyond the array's valid size (either before the 0th index or past the end) can lead to unpredictable behavior and potential issues. This might include, but is not limited to, overwriting other data, segmentation faults, or crashes.
04

Provide an example to illustrate the concept

Here is an example: ``` #include using namespace std; int main() { int my_array[5] = {1, 2, 3, 4, 5}; // No boundary checking is performed by C++ my_array[7] = 42; // Storing data past the end of the array cout << "The value at index 7 is: " << my_array[7] << endl; return 0; } ``` In the above example, we created an integer array of size 5. However, we store a value at index 7, which is past the end of the array. C++ allows us to do this without any errors or warnings because there is no automatic array boundary checking. Accessing or modifying data in an incorrect location like this can lead to unexpected consequences in the program.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Look at the following array definition. double sales [8][10] A) How many rows does the array have? B) How many columns does the array have? C) How many elements does the array have? D) Write a statement that stores 3.52 in the last column of the last row in the array.

The arrays array1 and array 2 each hold 25 integer elements. Write code that copies the values in array1 to array 2.

Use the following car structure declaration to answer. struct Car string make, model ; int year ; double cost ; / / Constructors \(\operatorname{car}()\) \(\\{\text { make }=\text { model }=" " ; \text { year }=\operatorname{cost}=0 ; \\}\) Car (string mk, string md, int yr, double \(\\{\text { make }=\mathrm{mk} ; \text { model }=\mathrm{md} ; \text { year }=\mathrm{yr} ; \text { cost }=\mathrm{c} ;\\}\) Write a loop that will step through the array you defined in question \(29,\) displaying the contents of each element.

When you pass an array name as an argument to a function, what is actually being passed?

To pass an array to a function, pass the _________ of the array.
See all solutions

Recommended explanations on Computer Science Textbooks

Issues in Computer Science

Read Explanation

Functional Programming

Read Explanation

Computer Programming

Read Explanation

Computer Organisation and Architecture

Read Explanation

Computer Network

Read Explanation

Algorithms in Computer Science

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free