Quantity sold item cost item selling price int quantity = 0; double cost = 0.0; double sellprice = 0.0; 1. enter the quantity sold, item cost, and item selling price 2. calculate the price and cost difference by subtracting the item cost from the item selling price 3. calculate the profit by multiplying the price and cost difference by the quantity sold 4. display the profit ipo zak, diane. an introduction to programming with c++ (p. 106). cengage learning. kindle edition.