The idea is that as soon as the customer purchases-some goods his shop, he will supply the description, unit price and the quantity purchased each item, as input to the computer. He wants that with this information, the computer should print each item along with its unit price,quantity purchased and the total price. Finally, the computer should also print the total cost of all the items purchased by the customer. Assuming that a sentinel value of zero is used for the quantity purchased field in the trailer record, Write a program using structures/file to do this job.