Can I call a constructor from another constructor (do constructor chaining) in C++?

Question

As a C# developer I\'m used to running through constructors:

class Test {
    public Test() {
        DoSomething();         


        

Answer 1

No, you can't call one constructor from another in C++03 (called a delegating constructor).

This changed in C++11 (aka C++0x), which added support for the following syntax:
(example taken from Wikipedia)

class SomeType
{
  int number;

public:
  SomeType(int newNumber) : number(newNumber) {}
  SomeType() : SomeType(42) {}
};