Formal parameters: Difference between revisions

Latest revision as of 21:48, 12 May 2007

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-In [[computer science]], a '''formal parameter''' is a name by which a subroutine refers to one of its parameters.  This is not to be confused with an [[actual parameter]], which is the name or value passed to the function by the caller.  For example, in the [[C programming language]],
+#REDIRECT [[Formal parameter]]
-<code>
- int foo(int a)
- {
-    int b = 5;
-    return a + b;
- }
- int bar(void)
- {
-    return foo(1);
- }
-</code>
-The subroutine bar() calls foo().  When bar() calls foo(), it passes the constant 1.  Within bar(), 1 is an actual parameter to foo().  Within foo(), a is a formal parameter which references the actual parameter 1 from bar().
-[[Category: Computers Workgroup]]
-[[Category: CZ Live]]