Chapter 7: Problem 42

To completely clear the contents of a vector, use the ___________ member function.

Short Answer

Expert verified

Answer: The member function used to clear the contents of a vector in C++ is `clear()`. It can be called on any vector object and will remove all elements from the vector, leaving its size as zero. For example, given a vector `myVector`, you can call the clear() function as follows: ```cpp myVector.clear(); ``` This will remove all elements from `myVector`, and its size will now be zero.

Step by step solution

Identify the member function

The member function used to clear the contents of a vector is called clear().

Understand how to use the clear() function

The clear() function is a member function of the vector class in C++. It removes all the elements from the vector, leaving its size as zero. It can be called on any vector object.

Example of using the clear() function

Here's an example of how to use the clear() function with a vector: 1. Include the necessary headers: ``` #include #include ``` 2. Create a vector with some elements: ``` cpp std::vector myVector = {1, 2, 3, 4, 5}; ``` 3. Display the original size of the vector: ``` cpp std::cout << "Original size of the vector: " << myVector.size() << std::endl; ``` 4. Clear the vector using the clear() function: ``` cpp myVector.clear(); ``` 5. Display the new size of the vector after clearing the contents: ``` cpp std::cout << "New size of the vector after clearing: " << myVector.size() << std::endl; ``` When you run this program, you'll see the following output: ``` Original size of the vector: 5 New size of the vector after clearing: 0 ``` This shows that the clear() function has successfully removed all the elements from the vector.

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!

Recommended explanations on Computer Science Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

To completely clear the contents of a vector, use the ___________ member function.

Short Answer

Step by step solution

Identify the member function

Understand how to use the clear() function

Example of using the clear() function

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Computer Science Textbooks

Theory of Computation

Algorithms in Computer Science

Functional Programming

Data Representation in Computer Science

Computer Network

Computer Programming

Study anywhere. Anytime. Across all devices.