Question

Q4 130 Quantity discounts are given according to the following table O points) A software company sells one software package regularly for 99 QR Quantity Discount 20% 10-19 20-49 50-99 |00 or more 40% 50% write ρ program that asks for the number of items sold, and computes the total cost of the purchase. if the user enters an invalid number of items, the program displays invalid Purchasel" message. Sample output Enter number of items: 25 Total cost is 1732.5 QR

Answer 1

The question doesn't mention about the required programming language. Hence I am giving the answer in   'C' programming language which can be easily converted to any other programming language by modifying the syntax.

#include <stdio.h> 4 1nt main 6 int noofItems; // variable to hold the noofItems float cost:// variable to hold the cost which is (cost per item noofItems float discount; // variable to hold the discount amount 8 10 // accept the total number of items printf("Enter number of items"); scam ("%d", &no0fItems); 12 13 14 15 16 17 18 19 /cost per item is 99 QR. multiply it with noofItems to get the cost cost 99 noOfItems; // calculate discount based on the condition given // 20% is equal to 20/100 which θ.20 and this decimal format is used /in calcuation

if(noOfItems>-10 && noofItems<-19) else if(no0fItems):29 && no0fItems 49) else if(noOfItems-50 &&noOfItems<-99) else if(noOfItems-100) else 20 21 discount-0.2e cost; discount 0.30 * cost; discount0.40 cost: discount-8.5e cost; discount--1; // if invalid range, discount will be assigned -1 23 25 26 27 28 29 31 32 // if discount is -1, it means an invalid range and hence invalid purchase if(discount =-1) printf("Invalid Purchase!"); 35 36 37 else //otherwise calculate cost -discount to find net amount and print that // #.2f is used to display only two decimal places in the net amount. print ("Total cost is %.2f QR", (cost discount)); return 0: 40

Sample output:

Enter number of items:: 25 Total cost is 1732.50 QR