What is a C++ vector?

C++ vectors are sequence containers that store elements. Specifically used to work with dynamic data, C++ vectors may expand depending on the elements they contain. That makes it different from a fixed-size array. C++ vectors can automatically manage storage. It is efficient if you add and delete data often.

What is std-vector in C++?

std::vector in C++ is the class template that contains the vector container and its member functions. It is defined inside the header file. The member functions of std::vector class provide various functionalities to vector containers. Some commonly used member functions are written below:

What is a vector header in C++?

In C++, the vector header file provides various functions that can be used to perform different operations on a vector. Vector iterators are used to point to the memory address of a vector element. In some ways, they act like pointers in C++.

Are vectors ordered in C++?

No vectors are not ordered in C++. Vector elements are placed in adjacent storage so that they can be accessed and travel across using iterators. In vectors, data is inserted at the end of it. Inserting an element at the end takes differential time, as sometimes there may be a need of extending the vector.