Function prototype: Difference between revisions
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l.length; // 2
</lang>
=={{header|Nimrod}}==
Procedure declarations can be used if a proc is to be used before its definition.
<lang nimrod># Procedure declarations. All are named
proc noargs(): int
proc twoargs(a, b: int): int
proc anyargs(x: varargs[int]): int
proc optargs(a, b: int = 10): int
# Usage
discard noargs()
discard twoargs(1,2)
discard anyargs(1,2,3,4,5,6,7,8)
discard optargs(5)
# Actual implementations
proc noargs(): int = echo "noargs"
proc twoargs(a, b: int): int = echo "twoargs"
proc anyargs(x: varargs[int]): int = echo "anyargs"
proc optargs(a: int, b = 10): int = echo "optargs"</lang>
=={{header|PARI/GP}}==
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