Wednesday, September 1, 2010

Data member initializers

Initializing data members

There are two ways to initialize data members.
  • Explicit assignments in a constructor.
  • In a member initializer in the constructor header.

Member initializer syntax

The definition (not the prototype) header is followed by a colon, the name of the field, and a parenthesized initial value. Separate multiple initializations with commas.
Insert example here

Member initializer required in the following cases

  • To initialize const data members.
  • To initialize references.
  • To initialize member objects. If a member initializer is not provided, the default constructor for that class will be called.
  • To initialize base class members.

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