C++ help URGENT
 

I don't know how many of you still use c++, anyways I have an assignement that I need to solve , and honestly I'm not so good with 2D arrays so I need help please . The question is :
Write a function where the user enters product quantities and unit cost. the data should be stored in a 2 dimensional array, the function should return the total cost of each product.

Please I would appreciate any help . thanks :D