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Function
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| == Definition == | == Definition == | ||
| A function is a [[subroutine]] to which one or more of the following apply:<br /> | A function is a [[subroutine]] to which one or more of the following apply:<br /> | ||
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| *acts on the parameters | *acts on the parameters | ||
| *returns a value | *returns a value | ||
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Revision as of 22:13, 1 May 2007
Definition
A function is a subroutine to which one or more of the following apply:
- it receives parameters
- it acts on the parameters
- it processes data located elsewhere
- it returns a value
A function does not create a new thread, and therefore the process which called the function waits until the function is completed before continuing executing its code.
As opposed to a process, a function doesn't have a frame; statement. See process for more information.
For a list of functions, see this list of functions.
Example
int addInts( int a , int b )
Begin
return a+b;
End
addInts(3,6); will return 9. One can see that the function does indeed:
- receives parameters
- acts on the parameters
- returns a value
