3D Vectors in C++

We will explore 3D Vectors in C++ in depth.
Vector is used in C++ to store items in consecutive memory locations dynamically. We can resize the vector in between program execution.
Vector is part of C++ Standard template library (STL library).

1D vector contains multiple elements,
2D vector contains multiple 1D vectors as rows and
3D vector contains multiple 2D vectors.

Therefore, we can say that 3D vector is vector of vector of vector.

Initializing 3D Vector1. Normal Initialization:

Generally...