Re: Undefined reference in G++.

"Alf P. Steinbach" <>
Thu, 22 Jun 2006 01:41:39 +0200
* Andrix:

I'm writing a class that have a static function

class Servicios {
      static String * intToString(int value);

Who is responsible for deallocating that String, and how?

Better use std::string.

an another class String that I write to.

namespace DataTypes {
  class String {

  ostream& operator<< (ostream&, const String &);
  istream& operator>>(istream&, String &)

the class String has two iostream functions implemented outside the

I have to a that has something like this:

int main() {
   String * str = Servicios::intToString(100);
   cout << str;

That will output a pointer value.


but when I do a make from all this, I have the error

In undefined reference to .............function

  what is undefined reference?

That your program is using something that is not defined.

when ocurr?

You haven't shown the relevant code.

how to solve this problem?

Define whatever is missing.

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