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limited_skillz

Posted: Sat Apr 17, 2004 6:06 pm Post subject: why doesnt this binary converter work? 


code:  var userNumber, base : int
put "Enter number: " ..
get userNumber
var tempWord : string := ""
base := 2
loop
tempWord := tempWord + intstr (userNumber mod base)
userNumber div= base
exit when userNumber = 1
end loop
put "Number in Binary: "..
for decreasing i : length (tempWord) .. 1
put tempWord (i) ..
end for 
with all this conversion talk i wanted to try it out for myself
why doesnt this program give the right answer? is it because of integer overflow or something? 





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Tony

Posted: Sat Apr 17, 2004 6:19 pm Post subject: (No subject) 


you don't divide userNumber by base in the loop, you subtract userNumber mod base from it 
Tony's programming blog. DWITE  a programming contest. 




limited_skillz

Posted: Sun Apr 18, 2004 12:13 am Post subject: (No subject) 


code:  var userNumber, base : int
put "Enter number: " ..
get userNumber
var tempWord : string := ""
base := 2
loop
tempWord := tempWord + intstr (userNumber mod base)
userNumber = userNumber mod base
exit when userNumber = 1
put tempWord
delay (10)
end loop
put "Number in Binary: "..
for decreasing i : length (tempWord) .. 1
put tempWord (i) ..
end for

still doesnt work, in fact it just goes on forever like this til an error occurs 





Tony





EDENE

Posted: Sun Apr 18, 2004 12:12 pm Post subject: Re: why doesnt this binary converter work? 


you first code was right except one line.
When program divide 1 by 2 (which will be the last process),
the userNumber will be 0.5
However, because userNumber variable is int type, userNumber will be 0.
so loop have to be exit when userNumber = 0 





Flashkicks

Posted: Tue Apr 20, 2004 7:51 am Post subject: (No subject) 


There is a Very handy MegaConverter just at the top of the Turing Help room. You should reallycheck it out. It is extremely short and efficent and does ALL the convertersions.. [fyi: it uses instr and wutnot it is the short method... the kind the teachers dont really like ] 





