Ellipsis (computer programming): Difference between revisions

Revision as of 01:56, 1 May 2014

Revision as of 14:44, 18 May 2014

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In the [[C (programming language)|C programming language]], an ellipsis is used to represent a [[variadic function|variable number of parameters]] to a [[function (programming)|function]]. For example:

:<code>voidint funcprintf( const char* strformat, ... );</code><ref>http://www.cplusplus.com/reference/cstdio/printf/</ref>

The above function in C could then be called with different types and numbers of parameters such as:

:<code>func("inputnumbers string%i %i %i", 5, 10, 15);</code>

and

:<code>func("input string %s, %f", "another string", 0.5);</code>

[[C99]] introduced macros with a [[variadic macro|variable number of arguments]].<ref>Working draft changes for C99 preprocessor synchronization - http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1653.htm</ref>

As of version 1.5, [[Java (programming language)|Java]] has adopted this "varargs" functionality. For example:

:<code>public int func(int num, String... strings)</code>

[[C99C++11]] included the C99 preprocessor, and also introduced macrostemplates with a [[variadic macrotemplate|variable number of arguments]].

===Java===

[[C++0x]] introduces templates with a [[variadic template|variable number of arguments]].

As of version 1.5, [[Java (programming language)|Java]] has adopted this "varargs" functionality. For example:

:<code>public int func(int num, String... strings)</code>

===PHP===