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This article introduces the knowledge about "what are the new features related to dynamic arrays in C++11." In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

Initialize with initialization list

Dynamic arrays can be initialized using initialization lists just like regular arrays, as follows:

After all, it's not an array.

I guess there are two reasons why it is called a dynamic array, one is that its memory is dynamically allocated, and the other is that it can be used like an array:

However, there are some differences between dynamic arrays and arrays. For example, the compiler cannot know the size of an array from its name. The following code does not work correctly:

Similarly, the scope for introduced in C++11 is not supported. The following code directly generates compilation errors:

an interesting exception

There is one exception to this. When an array of dynamically requested objects is freed, the compiler stores the size of the dynamic array in front of the dynamic array if a destructor is called. For example, the following classes:

After dynamically allocating memory, you can get the size of the array like this:

It is worth noting that this method may depend on the compiler implementation, so the author cannot guarantee that it will work correctly in all compilers.

"C++11 and dynamic array-related new features what" content is introduced here, thank you for reading. If you want to know more about industry-related knowledge, you can pay attention to the website. Xiaobian will output more high-quality practical articles for everyone!

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