Calling a constructor from a different constructor 1

[KaiDaniel]

Hi! My problem is the following. I'd like to call a constructor from within a different constructor to prevent code duplication.
E.g. the first constructor sets the first attribute and another constructor sets a second attribute and then calls the first constructor to set the first one, too.

Test::Test(int a)
{
  this->a = a;
}

Test::Test(int a, int b)
{
  this->b = b;
  Test::Test(a);  // this does not work 
}

In Java you can just call

Test(a);

If you do the same in C++ it just defines a new object of the class Test.

Is there a way of doing this in C++?
Thanks in advance for an answer.
KaiDaniel.

 

[esdee]

i dont think you can do what you want in C++
:0)
try taking common code out to a different function, that will be additionally called in your various constructors

 

[dds82]

Do it in the initializer list of the constructor.

Example:

Test::Test(int a, int b) : Test(a)
{
//Code goes here
}