For C++

Larry and Bill have decided to go into business together. They create a company called Larbil Inc. Larbil sells three kinds of products, pens, pencils and notebooks. Ask the user to enter the sales amount for each of the three products separately. Send the sales amounts of the three products as arguments to a function called double calcprofit, that has three parameters to hold sales amounts of each of the three products. In function calcprofit): 1. Display the largest sales amount of the three 2. Display the average sales amount per product The tax rate is 7% on sales amount. Calculate the total taxamount payable by Larbil Inc. on sale of the three products and return it back to main() function. Display the total tax amount in the main() function