Initialization (programming): Difference between revisions

Revision as of 18:54, 20 May 2010

Revision as of 22:48, 20 May 2010

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{{mergeto|Declaration (computer science)}}

In [[computer programming]], '''initialization''' is the assignment of an initial value for a [[data object]]. The way how initialization is performed depends on [[programming language]], as well as type, [[storage class]], etc., of an object to be initialized.

Programming constructs which perform initialization are typically called '''initializers''' and '''initializer lists'''.

==C family of languages==

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-->

:int i = 0;

:int i2(0);

:int k[4] = {0, 1};

:int j[2] = {rand(), k[0]};

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The coming new C++ standard, [[C++0x]], provides for a [[C++0x#Initializer_lists|more powerful concept of initializer lists]], by means of a template, called <tt>std::initializer_list</tt>.

===Default initialization===

Data initialization may occur without explicit syntax in a program to do so' For example, if [[static variable]]s are declared without an initializer, then those of [[primitive data type]]s are initialized with the value of zero of the corresponding type, while static objects of class type are initialized with their [[default constructor]]s.

==References==