Arrays And Counter -

[silent_k]

Hi
I have to create program using array and counters that asks the user to input a bunch of numbers(marks)from 0-10 and as soon as a certain value is entered (such as -45) then the program stops asking the user to input a mark and displays how many students in this case has the same mark (2 students have 4 marks if you enter 4 twice etc.) So far i have done the following but I don't know is the what becomes strint(l) after the error trap code is finished.Please help!

code:

var c:array0..10 of list var l: string put "Please enter the marks." loop get l: * if l >="0" and <="9" then exit elsif l>="a" and <="z" then put "error" elsif l ="-99" then exit else put "error" end if end loop ???=strint(l)

[wtd]

Let's clean that up a bit.

Turing:

var c : array 0..10 of list var l : string put "Please enter the marks." loop    get l: *    if (l >= "0" and l <= "9") or l = "-99" then       exit    else       put "error"    end if end loop ??? = strint (l)

Now, it seems you've got a decent grip on checking for good input.

Let's move that into a function.

Turing:

function getGrade : int    var l : string    var i : int    loop       get l: *       if strintok (l) then          i := strint (l)          if i >= 0 and i <= 100 then             result i          else             put "error"          end       else          put "error"       end if    end loop end getGrade

Does this make sense?

[[Gandalf]]

wtd, you're using functions a lot now, not sure if everyone will understand .

Also, you're missing an "if" after "end"

It should be:

code:

function getGrade : int    var l : string    var i : int    loop       get l: *       if strintok (l) then          i := strint (l)          if i >= 0 and i <= 100 then             result i          else             put "error"          end if       else          put "error"       end if    end loop end getGrade

[wtd]

[Gandalf] wrote:

wtd, you're using functions a lot now, not sure if everyone will understand .

Also, you're missing an "if" after "end"

Thanks for catching that.

And they should understand functions. Functions are critical and the only way to "get" them is to see them used and to use them.