Hey guys I need some major help...I really don't know what I'm doing wrong that my computations are not coming out right........

Question

#include <iostream>
using namespace std;

int main()

{

double order, discount,total, amount,price;

cout <<"\n\tEnter order amount: ";
cin >> order;

if(order <=19)
discount = .2;
else if(order >=20 && order <=49)
discount = .3;
else if(order >=50 && order <=99)
discount = .4;
else if(order >=100)
discount = .5;

cout<<"\t Discount amount"<<discount<<endl;
price = 99;
total = order*price-discount;
cout<<"\t total price "<<total<<endl;
return 0;

}

Answer 1

doesn't seem to calculate the correct amount...the total I manually do on the calculator doesn't equal the output....(order amount )75*99 (price)-40% (discount)...it comes out as 7,000+...that's not right with an 40% discount

Answer 2

What's the problem? the code seems correct

Answer 3

Arpan, that doesn't make any difference. c++ automatically performs multiplications first so brackets are useless. maybe total = order*(price-discount);

Answer 4

I didn't say It doesn't work. It's useless

Answer 5

I understand. you first need to calculate the total (price * amount) then calculate the discount (total * discount) then subtract it to the total price. let's say 75 is the amount, so 75 * 99 = 7425. now we do 7425 * 0.4 = 2970 to calculate the discount . the discounted price will then be 7425 - 2970 = 4455 ;)

Answer 6

Thanks for the help...it's perfect
if(order <=19)
discount = .2;
else if(order >=20 && order <=49)
discount = .3;
else if(order >=50 && order <=99)
discount = .4;
else if(order >=100)
discount = .5;

cout<<"\t Discount amount"<<discount<<endl;
price = 99;
total =(order*price)-(order*price*discount);
cout<<"\t total price "<<total<<endl;
return 0;

}

Answer 7

no problem, good luck!