What is vector in C++?

Vector is a template class that is a perfect replacement for the good old C-style arrays. It allows the same natural syntax that is used with plain arrays but offers a series of services that free the C++ programmer from taking care of the allocated memory and help to operate consistently on the contained objects.

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:

How do vector containers work?

Vector containers are implemented as dynamic arrays; Just as regular arrays, vector containers have their elements stored in contiguous storage locations, which means that their elements can be accessed not only using iterators but also using offsets on regular pointers to elements.

Can you use a single type for a vector in C++?

As with everything in C++ you can twist them around and use them in strange ways, but you risk shooting yourself in the foot of you don't use a single type for one vector, just the same as with an array. @isomorphismes Each item in the vector has to be the same length and type.