Turing Calculator

[Aerii]

What is it you are trying to achieve?
Make it so when he user types in an equation (Example: 2*2+3) then it will give the answer.


What is the problem you are having?
Outputs what I wrote (Example it shows 2*2+3 instead of 7)

Describe what you have tried to solve this problem
Tried searching for help but all I could find was doing real variables for num1 and num2 but not how I want it. Because you can do put 2 * (3+3-2) for example and it will give you the answer but it doesn't work the way im trying to do it.

Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)

Turing:

% Practice printing words, drawing objects and more. % Practice - Problem 2 % <My name here> % April 10, 2015 % *Variables* var space : string space := "" var name : string var answer : string var chars : array char of boolean var mathAnswer : string % Background Colour % Draw.FillBox (0, 0, maxx, maxy, COLOURHERE) % Generating a background TEXT colour % Text.ColourBack (COLOURHERE) % Practicing printing words and more. % setscreen decides what will be shown when you click run. (example: nobuttonbar "takes off the button bar") View.Set ("nobuttonbar, graphics, graphics:500;450, title: Variables Problem 2 | By: Lucas Winkler, position:center;center") colour (9) put "Press Enter to begin" % loops the if statement to always check if enter is pressed unless its asking you to write an answer. If it is pressed then it starts the conversation with turing. loop     Input.KeyDown (chars)     if chars (KEY_ENTER) then         cls         colour (9)         put "Whats your name? " ..         colour (5)         get name : *         % get name is the computer asking for your name. once entered it is stored as a variable string called name         put space         delay (750)         % Clears Screen         cls         colour (9)         put "Hello " ..         colour (5)         % writes name to the screen after "Hello" which is stored as a variable from when you wrote your name while the program is running         put name ..         colour (9)         put "!"         put space         delay (1000)         colour (9)         put "This computer can calculate any math equation you want."         put space         delay (1750)         colour (9)         put "Would you like to get an answer to a question? " ..         colour (5)         get answer : *         % If get answer is one of the following answers below then show answer to the question         if answer = "Sure" or answer = "Yes" or answer = "Sure!" or answer = "Yes!" or answer = "sure" or answer = "yes" or answer = "sure!" or answer = "yes!" then             colour (9)             put "Alright! " ..             delay (750)             put "What would you like to be solved? " ..             colour (5)             get mathAnswer             colour (9)             put "The answer to your question is " ..             colour (5)             put mathAnswer             put space             delay (1000)             put space             colour (2)             put "Press Enter to restart, or ESC to exit."             colour (9)             % Smiley Face :)             % outer circle/head             drawoval (50, 185, 50, 50, black)             % left outer eye             drawoval (23, 205, 12, 12, black)             % right outer eye             drawoval (78, 205, 12, 12, black)             % left eye             drawfilloval (23, 205, 7, 7, black)             % right eye             drawfilloval (78, 205, 7, 7, black)             % mouth             drawfillarc (51, 175, 30, 30, -180, 360, black)             % if get answer is no then exit in 5 seconds         elsif answer = "No" or answer = "no" or answer = "No!" or answer = "no!" then             cls             delay (500)             put "Awwww.. Okay ;("             delay (1250)             put "Guess I'll have to leave"             delay (1750)             cls             put "Turing as left the conversation. Exiting in 5 seconds."             delay (1000)             cls             put "Turing as left the conversation. Exiting in 4 seconds.."             delay (1000)             cls             put "Turing as left the conversation. Exiting in 3 seconds..."             delay (1000)             cls             put "Turing as left the conversation. Exiting in 2 seconds.."             delay (1000)             cls             put "Turing as left the conversation. Exiting in 1 second."             delay (1000)             cls             Draw.FillBox (0, 0, maxx, maxy, black)             quit             % if get answer is anything other than listed (example: what?) then it says I couldn' understand         else             colour (9)             put "Sorry I couldn't understand that. Please restart and try again."             colour (4)             put "(\"Hint Hint\": Sure, Yes, Sure!, Yes!, sure, yes, sure!, yes!, No, no, No!, no!)"         end if         % if escape is pressed the exit program in 5 seconds     elsif chars (KEY_ESC) then         cls         put "Exiting program in 5 seconds."         delay (1000)         cls         put "Exiting program in 4 seconds.."         delay (1000)         cls         put "Exiting program in 3 seconds..."         delay (1000)         cls         put "Exiting program in 2 seconds.."         delay (1000)         cls         colour (4)         put "Exiting program in 1 second."         delay (1000)         cls         Draw.FillBox (0, 0, maxx, maxy, black)         % ends the if statement and loop that was started at the beginning of the code     end if end loop % exits the program quit % Practicing drawing objects to the screen. %% Smiley Face :) %% outer circle/head % drawoval (42, 185, 50, 50, black) %% left outer eye % drawoval (15, 205, 12, 12, black) %% right outer eye % drawoval (70, 205, 12, 12, black) %% left eye % drawfilloval (15, 205, 7, 7, black) %% right eye % drawfilloval (70, 205, 7, 7, black) %% mouth % drawfillarc (43, 175, 30, 30, -180, 360, black)

Please specify what version of Turing you are using
4.11

[Insectoid]

You need to manually search through the input string and find the first expression to solve, then find the 2nd, then the third. Basically you need to manually implement BEDMAS. There are a number of ways to do this. A conceptually simple but tedious and inelegant method is to loop over the string looking for the first BEDMAS operation to solve, then replace that operation and its operands in the string with the solution. You could insert the string into an expression tree, which solves itself recursively. You could convert the string to post-fix or pre-fix notation, which eliminates BEDMAS entirely and iterate over it to solve, or insert it into a tree as well.

This is not an easy problem to solve. It will take a lot of work and you'll run into a lot of problems. That said, it is doable and if you put in an effort there is no reason you shouldn't get it to work.