From: Jed Kowalski <satanowicz@...>
Date: 2008-06-10T18:55:34+09:00
Subject: Re: something wrong with case/when syntax

David A. Black wrote:
> Hi --
> 
> On Tue, 10 Jun 2008, Jed Kowalski wrote:
> 
>> hi,
>> Can You tell me please why this instruction doesn't want to work
>> properly?
> 
> q is a string, and you're comparing it with integers (0, 1, etc.).
>  
> David

THX!!!
and now, the last (i think) problem:
the change(x) method doesn't want to work, can You tell me why?

BTW can somebody check for other errors?

class Drink

attr_accessor :price,:ammount,:name,:bought

   def initialize (cen, ile, nn)
     $price=cen
       $ammount=ile
       $name=nn
       $bought=0
     end

    def chage(x)
          $ammount-=1
          $bought+=1
          return x - self.pricea
    end
   def ammounti() return $ammount end
   def pricea() return $price end
   def buy() return $bought end
   def canbuy()
        if $ammount==0 then
        return false
        else return true
          end
                 end
   def namea() puts $name end

end
class Automat

  def initialize (pie, dwa, jed, piec, dwad, dzi)
    $tab = [[pie,dwa, jed, piec, dwad, dzi],[5,2,1,0.5,0.2,0.1]]
    puts $tab


         end
   def coins(n, s, g)
         x=s-n[g].pricea
              for  i in 0.. 5
                                w=$tab[0][i]
              for  w in w..0
                if (x-$tab[1][i])> -0.0001    then
                                                   $tab[0][i]=$tab[0][i]-1
                                                   x=x-$tab[1][i]
                                                   puts $tab[1][i]
                                                      end
              end
              end
                                       end
  def write()
        puts "Coins 5zl: ", $tab[0][0]
        puts "Coins 2zl: ", $tab[0][1]
        puts "Coins 1zl: ", $tab[0][2]
        puts "Coins 50gr: ", $tab[0][3]
        puts "Coins 20gr: ", $tab[0][4]
        puts "Coins 10gr: ", $tab[0][5]
        end
  def dodaj(x)
        if  x==5    then $tab[0][0]=$tab[0][0]+1 end
        if  x==2    then $tab[0][1]=$tab[0][1]+1 end
        if  x==1    then $tab[0][2]=$tab[0][2]+1 end
        if  x==0.5 then $tab[0][3]=$tab[0][3]+1 end
        if  x==0.2 then $tab[0][4]=$tab[0][4]+1 end
        if  x==0.1 then $tab[0][5]=$tab[0][5]+1 end
        end
end



    q=1
    m=1
    s=0
p = Automat.new(15,15,20,25,25,25)
 drinks = [
   Drink.new(1.7,0,"Coca-Cola"),
   Drink.new(2,0,"Sprite"),
   Drink.new(2.1,20,"Fanta") ]


while q!=0
      puts "What do you want to do?"
puts "Buy Drink:  1"
puts "Coin report:  2"
puts "Drink report:  3"
puts "Exit: 0"

q = gets.strip.to_i
puts q
puts q

case q

when 1:

     for j in 0..2
             drinks[j].namea()
             puts ": ",drinks[j].pricea()," press ",j
                                    end
     g = gets.strip.to_i
     if drinks[g].canbuy() then
      y=1
          s=0
      while y!=2
                puts "Coins inserted: ",s," What to do: \n\t\t Input 
coins: 0 \n\t\t Buy Drink: 1 \n\t\t Cancel: 2"
      puts "Your choice: "
      y = gets.strip.to_i
      if y==0 then
        puts "Input coins. "
                m = gets.strip.to_f
                s=s+m
                p.dodaj(m)
                      end
      if y==1 && drinks[g].chage(s)<0 then  puts "No chash. Iput coins"
        else
        puts "reszta: "
                p.coins(drinks,s,g)
                end
                #if y==2 then break end
              end


      else puts "No such Drinku."
      end
when 2:
  p.write()
when 3:
     puts "You boughts: "
     for i in 0..2
    drinks[i].namea()
        puts ": ", drinks[i].buy()
        end
        end
        end
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