----------------------------------- Cantharus Tue Jun 03, 2014 5:42 pm Vending Machine program problem ----------------------------------- What is it you are trying to achieve? Trying to fix an error What is the problem you are having? There's a problem in my code where: elsif paymentchoice = 1 and drink < 6 and creditpayment = drinkprice then put "Thank you, enjoy your drink!" elsif paymentchoice = 1 and drink < 6 and creditpayment > drinkprice then put "You paid more then enough, here's your change! $".. put creditpayment - drinkprice put ", come again!" elsif paymentchoice = 1 and drink < 6 and creditpayment < drinkprice then put "You didn't pay enough, sorry!" the message wouldn't show up, even if all the the prerequisites to show the message is true. Describe what you have tried to solve this problem I have tried moving the block of code right under the code that asks for the credit card number which has worked but then another part of the code doesn't work. %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- var drink : real var z : real var payment : real var paymentchoice : real var cash : real var cardnumber : real %Variables. var bank : real var answer : real var cashpayment : real var creditpayment : real var creditpayment2 : real var drinkprice : real var drinkprice2 : real %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- drinkprice := 1.5 drinkprice2 := 2 %Assigning a value to a variable. bank := 5 %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- loop put "List of drinks available:" put "-------------------------" put "1: Orange Soda" put "2: Coca Cola" put "3: Sprite" put "4: Mountain Dew" put "5: Fanta" %List of drinks the user can choose from. put "6: Diet Coke" put "7: Pepsi" put "8: Dr Pepper" put "9: Ginger Ale" put "10: Monster" put "" %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- loop put "Please enter the number associated with the drink that you would like." get drink put "" if drink = 1 then put "You have chosen Orange Soda, please pay $".. put drinkprice elsif drink = 2 then put "You have chosen Coca Cola, please pay $".. put drinkprice elsif drink = 3 then put "You have chosen Sprite, please pay $".. put drinkprice elsif drink = 4 then put "You have chosen Mountain Dew, please pay $".. put drinkprice elsif drink = 5 then put "You have chosen Fanta, please pay $".. %'if' statements that'll display a different price / error message depending on the number the user chooses. put drinkprice elsif drink = 6 then put "You have chosen Diet Coke, please pay $".. put drinkprice2 elsif drink = 7 then put "You have chosen Pepsi, please pay $".. put drinkprice2 elsif drink = 8 then put "You have chosen Dr. Pepper, please pay $".. put drinkprice2 elsif drink = 9 then put "You have chosen Ginger Ale, please pay $".. put drinkprice2 elsif drink = 10 then put "You have chosen Monster, which costs $".. put drinkprice2 elsif drink > 10 then put "You have put an invalid number, please try again." put "" end if exit when drink < 10 or drink = 10 end loop %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- loop put "" put "Please select the number associated with the payment choice from the available choices!" put "" put "1. Credit Card or 2. Cash" get paymentchoice put "" if paymentchoice = 1 and drink > 5 then put "You chose to pay by credit card, please type in your credit card number!" elsif paymentchoice = 1 and drink < 6 then put "You have chose to pay by credit card, please type in your credit card number!" %This part asks the user to choose a way of paying for the drink, and display a message according the set of options he has chosen. %For example, if he chose the #3 drink and chose to pay by credit card, it'll ask you for your credit card number. elsif paymentchoice = 2 and drink > 5 then put "You chose to pay by cash, please put in $".. put drinkprice2 elsif paymentchoice = 2 and drink < 6 then put "You chose to pay by cash, please put in $".. put drinkprice elsif paymentchoice > 2 then put "You chose an invalid option, please try agian." exit when paymentchoice = 1 or paymentchoice = 2 end if exit when paymentchoice = 1 or paymentchoice = 2 end loop %-----------------------------------------------------------%----------------------------------------------------------- loop if paymentchoice = 1 and drink > 5 then get cardnumber put "Your remaining balance is $".. put bank.. put ", please pay $".. put drinkprice2 get creditpayment2 end if %This part will display the price of the drink to the user and the remaining balance of their bank account. %This part will also ask the user to pay the amount of money required to recieve the drink they chose. if paymentchoice = 1 and drink < 6 then get cardnumber put "Your remaining balance is $".. put bank.. put ", please pay $".. put drinkprice get creditpayment %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- elsif paymentchoice = 1 and drink > 5 and creditpayment2 = drinkprice2 then put "Thank you, enjoy your drink! Your remaining balance is $".. bank := bank - creditpayment2 put bank.. put ", do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer if answer = 1 then end if elsif paymentchoice = 1 and drink > 5 and creditpayment > drinkprice2 then put "You payed more then enough, here's your change! $".. put creditpayment - drinkprice2.. put ", come again!" elsif paymentchoice = 1 and drink > 5 and creditpayment < drinkprice2 then put "You didn't pay enough, sorry!" elsif paymentchoice = 1 and drink < 6 and creditpayment = drinkprice then %This part of the code will display appropiate messages according to the amount of money the user paid and what drink he chose. put "Thank you, enjoy your drink!" elsif paymentchoice = 1 and drink < 6 and creditpayment > drinkprice then put "You paid more then enough, here's your change! $".. put creditpayment - drinkprice put ", come again!" elsif paymentchoice = 1 and drink < 6 and creditpayment < drinkprice then put "You didn't pay enough, sorry!" elsif paymentchoice = 2 then get cashpayment if paymentchoice = 2 and drink > 5 and cashpayment = drinkprice2 then put "Thank you, enjoy your drink!" %-----------------------------------------------------------%----------------------------------------------------------- end if end if end loop end loop Please specify what version of Turing you are using Turing 4.1.2 Thank youuuuu. ----------------------------------- Tony Tue Jun 03, 2014 7:08 pm Re: Vending Machine program problem ----------------------------------- the message wouldn't show up, even if all the the prerequisites to show the message is true. Are you sure that they are true? One way to check is to print all the values before evaluating the condition. E.g. [code] put "values are: ", paymentchoice, " | ", drink, " | ", creditpayment, " | ", drinkprice if paymentchoice = 1 and drink < 6 and creditpayment = drinkprice then put "Thank you, enjoy your drink!" [/code] Getting to the smallest amount of code that's required to demonstrate the error will make it much easier to identify and fix the problem. ----------------------------------- Cantharus Tue Jun 03, 2014 8:05 pm Re: Vending Machine program problem ----------------------------------- the message wouldn't show up, even if all the the prerequisites to show the message is true. Are you sure that they are true? One way to check is to print all the values before evaluating the condition. E.g. I've fixed the problem, how I did it is beyond me, but I won't complain! Here is the code I have now: %-----------------------------------------------------------%----------------------------------------------------------- var drink : real var payment : real var paymentchoice : real var cash : real var cardnumber : real %Variables. var bank : real var answer : real var cashpayment : real var cashpayment2 : real var creditpayment : real var creditpayment2 : real var drinkprice : real var drinkprice2 : real var cashchange : real var change : real %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- drinkprice := 1.5 drinkprice2 := 2 %Assigning a value to a variable. bank := 5 change := 1 cashchange := 1 %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- loop put "List of drinks available:" put "-------------------------" put "1: Orange Soda" put "2: Coca Cola" put "3: Sprite" put "4: Mountain Dew" put "5: Fanta" %List of drinks the user can choose from. put "6: Diet Coke" put "7: Pepsi" put "8: Dr Pepper" put "9: Ginger Ale" put "10: Monster" put "" %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- loop put "Please enter the number associated with the drink that you would like." get drink put "" if drink = 1 then put "You have chosen Orange Soda, please pay $".. put drinkprice elsif drink = 2 then put "You have chosen Coca Cola, please pay $".. put drinkprice elsif drink = 3 then put "You have chosen Sprite, please pay $".. put drinkprice elsif drink = 4 then put "You have chosen Mountain Dew, please pay $".. put drinkprice elsif drink = 5 then put "You have chosen Fanta, please pay $".. %'if' statements that'll display a different price / error message depending on the number the user chooses. put drinkprice elsif drink = 6 then put "You have chosen Diet Coke, please pay $".. put drinkprice2 elsif drink = 7 then put "You have chosen Pepsi, please pay $".. put drinkprice2 elsif drink = 8 then put "You have chosen Dr. Pepper, please pay $".. put drinkprice2 elsif drink = 9 then put "You have chosen Ginger Ale, please pay $".. put drinkprice2 elsif drink = 10 then put "You have chosen Monster, which costs $".. put drinkprice2 elsif drink > 10 then put "You have put an invalid number, please try again." put "" end if exit when drink < 10 or drink = 10 end loop %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- loop put "" put "Please select the number associated with the payment choice from the available choices!" put "" put "1. Credit Card or 2. Cash" get paymentchoice put "" if paymentchoice = 1 and drink > 5 then put "You chose to pay by credit card, please type in your credit card number!" elsif paymentchoice = 1 and drink < 6 then put "You have chose to pay by credit card, please type in your credit card number!" %This part asks the user to choose a way of paying for the drink, and display a message according the set of options he has chosen. %For example, if he chose the #3 drink and chose to pay by credit card, it'll ask you for your credit card number. elsif paymentchoice = 2 and drink > 5 then put "You chose to pay by cash, please put in $".. put drinkprice2 elsif paymentchoice = 2 and drink < 6 then put "You chose to pay by cash, please put in $".. put drinkprice elsif paymentchoice > 2 then put "You chose an invalid option, please try agian." exit when paymentchoice = 1 or paymentchoice = 2 end if exit when paymentchoice = 1 or paymentchoice = 2 end loop %-----------------------------------------------------------%----------------------------------------------------------- loop if paymentchoice = 1 and drink > 5 then get cardnumber put "Your remaining balance is $".. put bank.. put ", please pay $".. put drinkprice2 get creditpayment2 end if %This part will display the price of the drink to the user and the remaining balance of their bank account. %This part will also ask the user to pay the amount of money required to recieve the drink they chose. if paymentchoice = 1 and drink < 6 then get cardnumber put "Your remaining balance is $".. put bank.. put ", please pay $".. put drinkprice get creditpayment end if %-----------------------------------------------------------%----------------------------------------------------------- %-----------------------------------------------------------%----------------------------------------------------------- if paymentchoice = 1 and drink > 5 and creditpayment2 = drinkprice2 then put "Thank you, enjoy your drink! Your remaining balance is $".. bank := bank - creditpayment2 put bank.. put ", do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 elsif bank = 0 or bank < 0 then put "Sorry, you have insufficent funds." end if if paymentchoice = 1 and drink > 5 and creditpayment2 > drinkprice2 then put "You payed more then enough, here's your change $".. change := creditpayment2 - drinkprice2 put change.. put ", your remaining balance is $".. put bank - drinkprice2 put ". Do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 elsif bank = 0 or bank < 0 then put "Sorry, you have insufficent funds." end if if paymentchoice = 1 and drink > 5 and creditpayment2 < drinkprice2 then put "You didn't pay enough, sorry! Do you want to try and buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 end if if paymentchoice = 1 and drink < 6 and creditpayment = drinkprice then %This part of the code will display appropiate messages according to the amount of money the user paid and what drink he chose. put "Thank you, enjoy your drink! Your remaining balance is $".. bank := bank - creditpayment put bank.. put ", do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 elsif bank = 0 or bank < 0 then put "Sorry, you have insufficent funds." end if if paymentchoice = 1 and drink < 6 and creditpayment > drinkprice then put "You paid more then enough, here's your change! $".. change := creditpayment - drinkprice put change.. put ", your remaining balance is $".. put bank - drinkprice put ". Do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 elsif bank = 0 or bank < 0 then put "Sorry, you have insufficent funds." end if if paymentchoice = 1 and drink < 6 and creditpayment < drinkprice then put "You didn't pay enough, sorry! Do you want to try and buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 end if if paymentchoice = 2 and drink > 5 then get cashpayment2 elsif paymentchoice = 2 and drink < 6 then get cashpayment end if if paymentchoice = 2 and drink > 5 and cashpayment2 = drinkprice2 then put "Thank you, enjoy your drink! Do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 end if if paymentchoice = 2 and drink > 5 and cashpayment2 > drinkprice2 then put "You paid more then enough, here's your change $".. cashchange := cashpayment - drinkprice2 put cashchange.. put ". Do you want to buy another drink?" get answer exit when answer = 1 end if if paymentchoice = 2 and drink > 5 and cashpayment2 < drinkprice2 then put "You didn't pay enough, sorry! Do you want to try and buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 end if if paymentchoice = 2 and drink < 6 and cashpayment = drinkprice then put "Thank you, enjoy your drink! Do you want to buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 end if if paymentchoice = 2 and drink < 6 and cashpayment > drinkprice then put "You paid more then enough, here's your change $".. cashchange := cashpayment - drinkprice put cashchange.. put ". Do you want to buy another drink?" get answer exit when answer = 1 end if if paymentchoice = 2 and drink < 6 and cashpayment < drinkprice then put "You didn't pay enough, sorry! Do you want to try and buy another drink? Enter 1 if you do or 2 if you don't." get answer exit when answer = 1 end if %-----------------------------------------------------------%----------------------------------------------------------- end loop end loop But what I am trying to do now that I've fixed everything else is that, if the user chooses to pay by credit card, and he has a set $5 in his account, I want to show a message saying "You have insufficient funds" if he only has $1 in his account and attempts to buy a $1.50 drink, got any ideas on how to do that? ----------------------------------- Srlancelot39 Tue Jun 03, 2014 9:39 pm Re: Vending Machine program problem ----------------------------------- I want to show a message saying "You have insufficient funds" if he only has $1 in his account and attempts to buy a $1.50 drink, got any ideas on how to do that? After they select the drink, compare the drink cost to their credit card balance and only proceed with the transaction if they have sufficient funds. Else, decline the transaction.