Grocery Problem

[Jurica]

I have a problem with this question I have to do. I've tried everything I know, I am a beginner so please don't make fun of me like "Oh your so stupid".

Question: Write a program that accepts the name of an item and the price. Have the program
calculate a sales price that includes a 10% discount. Print a sales receipt on the screen
with the name of the item, the sales price, the GST and PST and the total price. (Be sure
to round-off to 2 decimal places)

var total : real := 0
var product : int
loop
put "Welcome to my Grocery Store!"
put "Enter product (1=Corn, 2=Potatoes, 3=Artichokes, 4=Quit): "..
get product
if product = 1 then
total := total + 2.25 - 0.18
elsif product = 2 then
total := total + 6.50 - 0.18
elsif product = 3 then
total := total + 1.75 - 0.18
elsif product = 4 then
exit
end if
put "The running total is $", total : 0:2
end loop
put "10% Discount: $", total * 0.10 : 0:2
put "GST: $", total * 0.08 : 0:2
put "PST: $", total * 0.06 : 0:2
put "--------------------------"
put "Final Total: $", total * 1.14 : 0:2

[jbking]

A few questions if you don't mind:

1) Why not let the user enter a string for the name of the product? This would be a bit easier on the user I think.

2) Why not let the user enter a quantity along with the price, e.g. they can buy 3 widgets @ $3.30 or whatever.

3) What is with subtracting .18 so often? I'm just wondering on this as it doesn't quite make sense to me.

4) Why not change the total on some of the lines near the end so that the discount is taken into account as the way it is written now, it doesn't really do that. Also, you aren't compounding the discount and taxes I think. For example, if you take a product that costs $100 and give a 10% discount and then add a 10% tax on it, what is the end result? Answer: $99 which isn't necessarily what some would know.

[Geniis]

Dont worry no one here will laugh at you.. everyone is a beginner at some point right?(im still a beginer myself ive only know turing for like 2 months lol)

Anyway with your problem i think you should do sumthing like this:

Turing:

%These are the variables in the program that will change as we go var total : real := 0  %What the total price without the tax or discount will be stored in var totalWithDiscount : real  %What the total will be after the discount var totalWithTax : real  %Then what it will be after taxes var product : int  %What the customer wants to buy var productList : string := ""  %What we will list our products in var amount : int  %How much of a product we want to buy %These are the constants, variables that will always remain the same const cornPrice : real := 2.25  %The price of corn const potatoPrice : real := 6.50  %The price of potatoes const artichokePrice : real := 1.75  %The price of artichokes const gst : real := 0.08  %Our gst const pst : real := 0.06  %Our pst %Actual program put "Welcome to my Grocery Store!"  %Initial welcome into the store...no need to repeat it loop     put "Enter product (1=Corn, 2=Potatoes, 3=Artichokes, 4=Quit): " ..  %Prompt for product     get product  %Get product      if product = 1 then %if product 1            put "How many of them would you like?" %Prompt for number of product         get amount %Get amount         total := total + (2.25 * amount) % This is your total so far plus the price of item selected x number of item selected         productList := productList + "Corn x " + intstr (amount) + " \n"  %This says to add Corn x  amount of corn selected(we use intstr(amount) to turn amount into a string)                                                                           %And put \n to tell turing to jump to the next line(kinda like pressing enter when your typing)     elsif product = 2 then  %This         put "How many of them would you like?"          get amount          total := total + (6.50 * amount)          productList := productList + "Potatoes x " + intstr (amount) + " \n"      elsif product = 3 then                                                                                      put "How many of them would you like?"                                                                      get amount                                                                                                  total := total + (1.75 * amount)                                                                            productList := productList + "Artichokes x " + intstr (amount) + " \n" %to this Is all same as it was up there /\     elsif product = 4 then  % Exit if 4 is pressed         exit     end if     put "The running total is $", total : 0 : 2  %This puts running total after every item adde to list end loop totalWithDiscount := total - (total * 0.10) %Now that customer is done buying add up the total after the discount totalWithTax := totalWithDiscount + (totalWithDiscount * gst) + (totalWithDiscount * pst) %And then with taxes put "--------------------------" put "Bought : " %Now display what was bought put productList %--------------------------- put "Total : $", total : 0 : 2 %What there total is before taxes and discount put "10% Discount: $", total * 0.10 : 0 : 2 %How much is the discount put "GST: $", total * gst : 0 : 2 %The gst total put "PST: $", total * pst : 0 : 2 %The pst total put "--------------------------" put "Final Total: $", totalWithDiscount : 0 : 2 %What the final total is after taxes and discount

Not to complicating. Try keeping most of your numbers and stuff inside of variables and constants, makes it easier to read your program (as long as the variable name isnt completely random lol)
That should solve your probleme

[Jurica]

Geniis @ Tue Nov 04, 2008 9:28 pm wrote:

Dont worry no one here will laugh at you.. everyone is a beginner at some point right?(im still a beginer myself ive only know turing for like 2 months lol)

Anyway with your problem i think you should do sumthing like this:

Turing:

%These are the variables in the program that will change as we go var total : real := 0  %What the total price without the tax or discount will be stored in var totalWithDiscount : real  %What the total will be after the discount var totalWithTax : real  %Then what it will be after taxes var product : int  %What the customer wants to buy var productList : string := ""  %What we will list our products in var amount : int  %How much of a product we want to buy %These are the constants, variables that will always remain the same const cornPrice : real := 2.25  %The price of corn const potatoPrice : real := 6.50  %The price of potatoes const artichokePrice : real := 1.75  %The price of artichokes const gst : real := 0.08  %Our gst const pst : real := 0.06  %Our pst %Actual program put "Welcome to my Grocery Store!"  %Initial welcome into the store...no need to repeat it loop     put "Enter product (1=Corn, 2=Potatoes, 3=Artichokes, 4=Quit): " ..  %Prompt for product     get product  %Get product      if product = 1 then %if product 1            put "How many of them would you like?" %Prompt for number of product         get amount %Get amount         total := total + (2.25 * amount) % This is your total so far plus the price of item selected x number of item selected         productList := productList + "Corn x " + intstr (amount) + " \n"  %This says to add Corn x  amount of corn selected(we use intstr(amount) to turn amount into a string)                                                                           %And put \n to tell turing to jump to the next line(kinda like pressing enter when your typing)     elsif product = 2 then  %This         put "How many of them would you like?"          get amount          total := total + (6.50 * amount)          productList := productList + "Potatoes x " + intstr (amount) + " \n"      elsif product = 3 then                                                                                      put "How many of them would you like?"                                                                      get amount                                                                                                  total := total + (1.75 * amount)                                                                            productList := productList + "Artichokes x " + intstr (amount) + " \n" %to this Is all same as it was up there /\     elsif product = 4 then  % Exit if 4 is pressed         exit     end if     put "The running total is $", total : 0 : 2  %This puts running total after every item adde to list end loop totalWithDiscount := total - (total * 0.10) %Now that customer is done buying add up the total after the discount totalWithTax := totalWithDiscount + (totalWithDiscount * gst) + (totalWithDiscount * pst) %And then with taxes put "--------------------------" put "Bought : " %Now display what was bought put productList %--------------------------- put "Total : $", total : 0 : 2 %What there total is before taxes and discount put "10% Discount: $", total * 0.10 : 0 : 2 %How much is the discount put "GST: $", total * gst : 0 : 2 %The gst total put "PST: $", total * pst : 0 : 2 %The pst total put "--------------------------" put "Final Total: $", totalWithDiscount : 0 : 2 %What the final total is after taxes and discount

Not to complicating. Try keeping most of your numbers and stuff inside of variables and constants, makes it easier to read your program (as long as the variable name isnt completely random lol)
That should solve your probleme

Thank you, this was fixed my problem.

[syntax_error]

Jurica @ Wed Nov 05, 2008 4:47 pm wrote:

Thank you, this was fixed my problem.

How? Jurica simply gave away the answer, I do not mean to sound like a prick; however, try reading over the forum rules? Posting full solutions does not help the person. Furthermore, its frowned upon.

[Jurica]

syntax_error @ Wed Nov 05, 2008 9:38 pm wrote:

Jurica @ Wed Nov 05, 2008 4:47 pm wrote:

Thank you, this was fixed my problem.

How? Jurica simply gave away the answer, I do not mean to sound like a prick; however, try reading over the forum rules? Posting full solutions does not help the person. Furthermore, its frowned upon.

I know he posted the whole thing, but I already did like 75% of the question probably more. He just helped the rest I needed help with. But I don't really understand the rules, this is in 'Turing Help' section, but you can't help him fully. That's kind of gay.

[Euphoracle]

No, it's not a sexuality, and it makes perfect sense, because you learn nothing.

[Jurica]

Euphoracle @ Thu Nov 06, 2008 3:33 pm wrote:

No, it's not a sexuality, and it makes perfect sense, because you learn nothing.

I don't mean gay as in Homosexual, and it doesn't really because if I need help people help me, they may be giving me the whole answer but I did most of the question I just needed help with a couple of things, and I do learn something. I didn't just copy and paste the solution and pasted it and handed my work. I went through it and read it so next time I need to do something like that again I'll know what to do, so I basically do learn. And why would they make a 'Turing Help' page if you're not even aloud to really help them?

[jbking]

The question is what kind of help to give: If the whole answer is given, some may learn and some may not learn from it. Usually there are ways to suggest various ways to try to solve the problem so that the methodology is transferred but not everyone can get that.

It would be one thing if this was called "Turing Solutions" but it isn't.

[Jurica]

I know he gave the whole solution but I asked to help me with a couple of things, he just used my answers that I've posted changed it a bit to put the stuff I asked. This isn't supposed to help other people it's for me, I asked him.

[Geniis]

sorry i didnt want to give him the entire thing but i didnt know how else to help.. what i posted was only supposed to give him a general idea of what to do...
I guess before i help someone i should make sure i know how to explain things first eh? lol

[Jurica]

Lol, true. But thanks anyways.