manipulators in c++

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i need to write a manipulator for class date,
cout << dmy << obj;
it will first print date, month and year. Is there any one cal help me..................?

Posted 23-Jul-10 19:55pm

jjmlv

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Sandeep Mewara 24-Jul-10 2:07am

What do you mean by manipulators? Can't you extract them separately and print it?

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jjmlv · Answer 1 · 2010-07-24T01:04:00

Solution 2

My questions is about manipulators . DMY is a malipulator, thats i want to write.

i have already over load<< operator...

ostream &operator<<(ostream &out, date d)
{
return out << d.day() << d.month() << d.year();
}
but, cout << MYD << d;
will give the output like month, year & date. MYD is the malipulator i need to write . if you know tell me...

Thanks Mr.Niklas

Posted 24-Jul-10 1:04am

jjmlv

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Niklas L 25-Jul-10 5:36am

You will have to write a manipulator that takes an argument, pretty much like the 'expand' example in the link I gave in my post, and then you will have to use the manipulator like this: cout << MYD(d);

Niklas L · Answer 2 · 2010-07-23T20:52:00

Solution 1

Are you looking for operator overloading? Something like:

C++

ostream &operator<<( ostream &out, const DMY &dmy )
{
  out << dmy.Date() << dmy.Month() << dmy.Year();
  return out;
}

Edit:
maybe I misunderstood your question a bit. Here is a good link to show you how WritingStreamManipulators.html[^]

Posted 23-Jul-10 20:52pm

Niklas L

Updated 23-Jul-10 21:08pm

v3