in C++ File

Paint usage calculator -A room has one door, two windows, and a built-in bookshelf and it needs to be painted. Suppose that one gallon of paint can paint 120 square feet. make (C++ file) a program that prompts the user to input the length and the width of the door, each window, the bookshelf: and the length, width, and height of the room, in feet. The program outputs the amount of paint needed to paint the walls of the room. A typical window is 2.5 ft wide and four feet high. A typical door is 3 ft wide and 6.75 ft high. The bookshelf is 3 ft wide in 6 feet high.