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Error: "no operator "<<" matches these operands

28-11-2011 07:04PM

#1

i124Q

Registered Users, Registered Users 2 Posts: 429 ✭✭

Join Date: April 2011

Posts: 308

I'm using C++ with allegro(don't think this has any affect on this issue) and Visual Studio 2010.

Helpp pleeease. So annoying. See pic below.

0

Comments

#2 28-11-2011 08:20PM
Colonel Panic

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Posts: 2031
Did you overload operator << for the Shape class?
std::ostream& operator<< (std::ostream &out, Shape &shape) { out << "This is a Shape! Yay!!!"; return out; }

You might need to make it a friend of Shape if you want to write out private members.

0
#3 28-11-2011 08:55PM

Anima

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Join Date: June 2001

Posts: 3725

Yeah you need to overload the << operator or make a function and explicitly call it in your loop.

Also with C++11 you can cut out some of the syntax for iterators by using the auto keyword.

[PHP]
for (auto it = s.begin(); it != s.end(); it++) {
cout << *it << endl;
}
[/PHP]

0