18.1: Recursive Subroutines
- Page ID
- 54378
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A recursive subroutine declaration must be preceded by the keyword recursive. For example:
recursive subroutine <name> ( <arguments> )
<declarations>
<body of subroutine>
return
end subroutine <name>
Based on this declaration the subroutine can call itself. The routine must ensure that it eventually stops calling itself. Arguments are passed in the standard way.
The calling routine does not need any special declarations in order to call a recursive routine.