Write C++ code to handle the following tasks. Students buy lab manuals for three subjects PF, DB and Java. You have to input quantity of PF, DB and Java to be purchased by student, also input selling price of PF, DB and Java lab manuals. After that input whether student is from BIIT or not if user enters “b” (not case sensitive) it means student is from BIIT otherwise student is not from BIIT. Provide 20% discount to BIIT students. Student from other institutes are provided 5% discount if bill exceeds 30,000. You have to display bill without discount, discount amount and bill after discount.