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loops

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Join Date: Jul 2007
Posts: 47
#1: Jul 25 '07
can anyone tell me where to beging with this one?


Write a program in Javascript which uses a while loop to output a conversion table for 1-100 degrees C to degrees F.



Where F= (C* 9/5) + 32

Plater's Avatar
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Location: New England
Posts: 7,161
#2: Jul 25 '07

re: loops

This sounds like a homework question, and also not a very difficult one.
Look up to the FOR loop in javascript on a tutorial site and you should find all you need to know
epots9's Avatar
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Posts: 1,313
#3: Jul 25 '07

re: loops

Quote:

Originally Posted by ballygowanboy

can anyone tell me where to beging with this one?


Write a program in Javascript which uses a while loop to output a conversion table for 1-100 degrees C to degrees F.



Where F= (C* 9/5) + 32

y not use a forloop?

good luck
pbmods's Avatar
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Posts: 5,435
#4: Jul 25 '07

re: loops

Quote:

Originally Posted by epots9

y not use a forloop?

Never ask a question about homework. There is no good response, except for, "I want you to do it this way."

While loops better teach the fundamentals behind looping. When you think about it, a for loop is really just an efficient way of coding a while loop with a counter.

[EDIT: Ok, who did that? You know who you are.]
Member
  
Join Date: Jul 2007
Posts: 47
#5: Jul 26 '07

re: loops

i wrote a simple php script, which i then had to turn into a javascript, it's not working.

i'm unsure when to put "var" in front of a variable in javascript.

can someone tell me what i'm doing wrong, thanks.



Expand|Select|Wrap|Line Numbers
  1. <script language="javascript1.2">
  2.  
  3. document.write("<b>Celcius to Farenheit</b><br>");
  4.  
  5. function getF(x)
  6.     {
  7.     var convert = x * 1.8 + 32;
  8.     return convert;
  9.     }
  10.  
  11.     var i=0;
  12.  
  13.     while(i<=100) {
  14.         result=getF(i);
  15.         document.write "i - result <br>";
  16.         i=i+1;
  17.     }
  18.  
  19. </script>
  20.  
iam_clint's Avatar
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Location: Oklahoma
Posts: 1,076
#6: Jul 26 '07

re: loops

this is homework isn't it????

Expand|Select|Wrap|Line Numbers
  1. document.write "i - result <br>";
You had this line mostly correct, although its going to literally write i - result then a break

it needs to look something like this
Expand|Select|Wrap|Line Numbers
  1. document.write(i - result+"<br>");
epots9's Avatar
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Join Date: May 2007
Location: Canada
Posts: 1,313
#7: Jul 26 '07

re: loops

Quote:

Originally Posted by ballygowanboy

i wrote a simple php script, which i then had to turn into a javascript, it's not working.

i'm unsure when to put "var" in front of a variable in javascript.

can someone tell me what i'm doing wrong, thanks.



Expand|Select|Wrap|Line Numbers
  1.  
  2. <script language="javascript1.2">
  3.  
  4. document.write("<b>Celcius to Farenheit</b><br>");
  5.  
  6. function getF(x)
  7.     {
  8.     var convert = x * 1.8 + 32;
  9.     return convert;
  10.     }
  11.  
  12.     var i=0;
  13.  
  14.     while(i<=100) {
  15.         result=getF(i);
  16.         document.write "i - result <br>";
  17.         i=i+1;
  18.     }
  19.  
  20. </script>

without testing everything it looks good, but instead of
[html]
<script language="javascript1.2"></script>
[/html]
use
[html]
<script type="text/javascript"></script>
[/html]
info about script tag

and u should use
Expand|Select|Wrap|Line Numbers
  1. var result=getF(i);
  2. document.write(i - result+"<br>");
  3.  
test that out...

good luck
Member
  
Join Date: Jul 2007
Posts: 47
#8: Jul 26 '07

re: loops

ok, almost working, but it's not writing the value of i

i'm just geting - result

-32
-32.8
-33.6
-34.4.................



Expand|Select|Wrap|Line Numbers
  1. <script language="javascript1.2">
  2.  
  3. document.write("<b>Celcius to Farenheit</b><br>");
  4.  
  5. function getF(x)
  6.     {
  7.     var convert = x * 1.8 + 32;
  8.     return convert;
  9.     }
  10.  
  11.     var i=0;
  12.  
  13.     while(i<=100) {
  14.         var result=getF(i);
  15.         document.write(i - result+"<br>");
  16.         i=i+1;
  17.     }
  18.  
  19. </script>
gits's Avatar
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Join Date: May 2007
Location: Munich, Germany
Posts: 4,136
#9: Jul 26 '07

re: loops

hi ballygowanboy,

please use the correct CODE tags when posting code ... and don't use textformating tags for it ... have a look here

kind regards
pbmods's Avatar
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Join Date: Apr 2007
Location: Texas
Posts: 5,435
#10: Jul 26 '07

re: loops

Heya, ballygowanboy.

Check out this article.
Reply

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