![]() vector::cend(): it’s the same as vector::end() but can’t modify vector elements.vector::cbegin(): it’s the same as vector::begin(), but it doesn’t have the ability to modify elements.vector:: end(): it gives an iterator that points to the past-the-end element of the vector.vector:: begin(): it gives an iterator that points to the first element of the vector.Here are the common iterators supported by C++ vectors: It’s an object that works like a pointer. The purpose of iterators is to help us access the elements that are stored in a vector. The items denote the number of elements for the vector’s data.The name is the name of the vector or the data elements.The data-type is the data type of the elements to be stored in the vector.As shown above, we begin with the vector keyword.The syntax of vectors in C++ is: vector name (items) If the size of the data is not known before beginning, the vector won’t require you to set the maximum size of the container.When dealing with data elements that change consistently.Insertion or deletion of an element at the beginning of the vector takes linear time.Ī C++ vector should be used under the following circumstances: The reason is that there is no need to resize the vector. The removal of an element from a vector takes constant time. The insertion of new data to a vector is done at its end. This allows C++ programmers to access and traverse the vector elements using iterators. The elements of a vector are stored in contiguous storage. ![]() ![]() The storage is handled automatically by the container. The resizing occurs after an element has been added or deleted from the vector. A C++ Vector is a dynamic array capable of resizing itself automatically.
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