Its a C++ question

Problem 5 Chapter 10, Programming Exercises problem 10.4 pg 545. 4. Write a program that prompts the user to enter two points v , ') and w = (wi, wa, ws) in three-space. The program then computes the lengths of the vec- tors ov, ow, and vw; the dot product of ov and ow; the angle between ov and ow; and the cross product ov ow. where o is the origin (0,0,0). The vector ab is the vector from point a to point b. Represent the points and vectors using structures. If a (a, ag,a) and b- (b, b.b), the length of ab is given by the formula The dot product of ov and ow is given by the formula