Convert small bit of code from c++11 to c++03?

I'm a social scientist trying to compile C++ code, and hitting small problem I think is trivially easy to fix if you know C++, but inscrutable to me.

Trying to compile on V2008, but my code seems to use some C++11 syntax tricks.

In principle, I think this is solution, but I really don't understand C++ so not sure how to implement.

Code block:

Optimiser::Optimiser(double eps, double delta, unsigned long max_itr, long random_order)
{
  this->eps = eps;
  this->delta = delta;
  this->max_itr = max_itr;
  this->random_order = random_order;
}

Optimiser::Optimiser() : Optimiser::Optimiser(1e-5, 1e-2, 1000, 1)
{
  //ctor
}

And the error I get (referring to the Optimiser::Optimiser() : Optimiser::Optimiser(1e-5, 1e-2, 1000,1) line) is:

c:\Program Files (x86)\Common Files\Microsoft\Visual C++ for Python\9.0\VC\Include\xlocale(342) : warning C4530: C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc
src\Optimiser.cpp(39) : error C2039: '{ctor}' : is not a member of 'Optimiser'        include\Optimiser.h(26) : see declaration of 'Optimiser'
src\Optimiser.cpp(40) : error C2614: 'Optimiser' : illegal member initialization: 'Optimiser' is not a base or member
error: command '"c:\Program Files (x86)\Common Files\Microsoft\Visual C++ for Python\9.0\VC\Bin\amd64\cl.exe"' failed with exit status 2