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Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: Beginner
Sep 11, 2001

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The Order of Initializing Parameters in a Constructor


When initializing parameters in a constructor, the order of initialization will not be the same as the order in which you typed them. The order of initializing parameters is 'as declared' in a class:
 
class CMyClass
{
public:
  CMyClass();

private:
  int m_nParam1;
  int m_nParam2;
  int m_nParam3;
};

CMyClass::CMyClass()
: m_nParam3(0), m_nParam2(0), m_nParam1(0)
{
}

The order of initializing will be :
m_nParam1(0), m_nParam2(0), m_nParam3(0)
Nick Van
 
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