I'm having some trouble with this C++ problem.

Write a Cube class that has the following fields:

edgeLength: a double representing the edge length of the cube. The class should have the following methods: Constructor. Accepts the edge length of the cube as an argument. Constructor. A no-arg constructor that sets the edgeLength field to 0.0. setEdgeLength. A mutator method for the edgeLength field. getEdgeLength. A accessor method for the edgeLength field. getSurfaceArea. Returns the surface area of the cube, which is calculated as surface area = 6 * edgeLength * edgeLength getVolume. Returns the volume of the cube, which is calculated as volume = edgeLength * edgeLength * edgeLength getFaceDiagonal. Returns the face diagonal of the cube, which is calculated as face diagonal = 2 * edgeLength