What is the purpose of vector?

What is the purpose of vector?

the vector class? or vectors in math?

vectors in math have two values. they are used to show direction and power.

the vector class in C++ is a type of container class. it's like a regular array, except it can be extended, copied, and sorted easily.

http://www.msoe.edu/eecs/ce/courseinfo/stl/vector.htm