A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4 =
9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components <a,b>
of a pythagorean triple are specified. The function signature will be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks. 37  3383 
"Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:41******** *************** @news.optusnet. com.au... A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4
= 9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components <a,b>
of a pythagorean triple are specified. The function signature will be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
No? Well it sure sounds like it.
Not that it matters. Requests for coding from requirements are off topic for
this newsgroup. Take a crack at writing your function and if it doesn't work
post what you have.
--
Cy http://home.rochester.rr.com/cyhome/
"Cy Edmunds" <ce******@spaml ess.rochester.r r.com> wrote in message
news:vo******** *********@twist er.nyroc.rr.com ... "Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:41******** *************** @news.optusnet. com.au...A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4
= 9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components
<a,b> of a pythagorean triple are specified. The function signature will
be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
No? Well it sure sounds like it.
Not that it matters. Requests for coding from requirements are off topic
for this newsgroup. Take a crack at writing your function and if it
doesn't work post what you have.
--
Cy
http://home.rochester.rr.com/cyhome/
I wrote the requirements myself I'll have you know.
"Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:41******** *************** @news.optusnet. com.au... A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4
= 9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components <a,b>
of a pythagorean triple are specified. The function signature will be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
Is all that < , > part of your input? If not it sounds very easy, just read
two integers and calculate the third.
john
Jason Heyes wrote:
A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4 =
9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components <a,b>
of a pythagorean triple are specified. The function signature will be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
What I am wondering is: What is your *exact* problem?
The task sounds easy enough. Or not so easy, depending on what you
are willing to invest in syntax parsing.
Post your attempt at it, and tell us where your problem is, which
part of it you can't do or have no idea on how to do it.
--
Karl Heinz Buchegger kb******@gascad .at
"Jason Heyes" <ja********@opt usnet.com.au> wrote in message news:<41******* *************** @news.optusnet. com.au>... "Cy Edmunds" <ce******@spaml ess.rochester.r r.com> wrote in message
news:vo******** *********@twist er.nyroc.rr.com ... "Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:41******** *************** @news.optusnet. com.au...
I want to write a function to extract pythagorean triples from an input
stream.
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
Requests for coding from requirements are off topic for this newsgroup.
I wrote the requirements myself I'll have you know.
So? RTFF. Requests for coding from requirements are off topic, and
there's no exception in there for the case where you wrote them.
Besides, it's not like we believe you. You can't write the requirements
in that detail if you can't even try to come up with a first attempt
at implementing them.
Regards,
Michiel Salters.
"Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:41******** *************** @news.optusnet. com.au... A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4
= 9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components <a,b>
of a pythagorean triple are specified. The function signature will be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
You should be able to write it yourself. Are you asking for an algorithm?
Well, since a*a+b*b=c*c, try computing the square root of a*a+b*b. If the
result of that is the same as the floor() of that result, then you've got a
valid integer result, and a result that satisfies the requirements.
Otherwise you don't.
sqrt(3*3+4*4) = 5.0000... == 5.0 --> 5 satisfies
sqrt(3*3+5*5) = 5.8309... != 5.0 --> nothing satisifies
-Howard
"Jason Heyes" <ja********@opt usnet.com.au> wrote in message news:41******** *************** @news.optusnet. com.au... A pythagorean triple is a triple <a,b,c> whose components are positive integers satisfying a*a + b*b = c*c. An example is <3,4,5>
since 3*3 + 4*4 = 9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input stream. The input is formatted so that only the first two
components <a,b> of a pythagorean triple are specified. The function signature will be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this functionality?
Your request shows up here often enough to have become a FAQ.
See http://www.parashift.com/c++-faq-lit...t.html#faq-5.2
This is not for a school project in case you're wondering.
I would help if you could cogently explain why anybody not a student
would need to solve this trivial problem yet require help to do so.
Thanks.
--
--Larry Brasfield
email: do************* **********@hotm ail.com
Above views may belong only to me.
"Michiel Salters" <Mi************ *@logicacmg.com > wrote in message
news:fc******** *************** ***@posting.goo gle.com... "Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:<41******* *************** @news.optusnet. com.au>... I wrote the requirements myself I'll have you know.
So? RTFF. Requests for coding from requirements are off topic, and
there's no exception in there for the case where you wrote them.
Besides, it's not like we believe you. You can't write the requirements
in that detail if you can't even try to come up with a first attempt
at implementing them.
Regards,
Michiel Salters.
Don't talk about what I can or can't do. Its insulting.
"John Harrison" <jo************ *@hotmail.com> wrote in message
news:2v******** *****@uni-berlin.de...
"Jason Heyes" <ja********@opt usnet.com.au> wrote in message
news:41******** *************** @news.optusnet. com.au...A pythagorean triple is a triple <a,b,c> whose components are positive
integers satisfying a*a + b*b = c*c. An example is <3,4,5> since 3*3 + 4*4
= 9 + 16 = 25 = 5*5.
I want to write a function to extract pythagorean triples from an input
stream. The input is formatted so that only the first two components
<a,b> of a pythagorean triple are specified. The function signature will
be:
std::istream &operator>>(std ::istream &is, PythagoreanTrip le &triple);
Can anyone write me some good working code that implements this
functionality? This is not for a school project in case you're wondering.
Thanks.
Is all that < , > part of your input? If not it sounds very easy, just
read two integers and calculate the third.
john
No the < , > symbols are not part of the input. Here is some code that reads
two integers and calculates the third:
int a, b;
if (!(is >> a && is >> b))
return is;
int c = (int)sqrt(a*a + b*b);
This is wrong code for the stated requirements. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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