What is a vector in C++?

In C++, vectors are used to store elements of similar data types. However, unlike arrays, the size of a vector can grow dynamically. That is, we can change the size of the vector during the execution of a program as per our requirements. Vectors are part of the C++ Standard Template Library.

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 included in C++ Standard Template Library?

Vectors are included in the C++ Standard Template Library. We are able to make use of Vector in C++ of the following circumstances: It is recommended to make use of Vector in C++ when data is regularly changing. In case the dimensions of data are unfamiliar then It is recommended to make use of Vector in C++.

How to initialize a vector in C++?

There are different ways to initialize a vector in C++. Here, we are initializing the vector by providing values directly to the vector. Now, both vector1 and vector2 are initialized with values 1, 2, 3, 4, 5. Here, 5 is the size of the vector and 12 is the value.