RosettaCodeData/Task/Fibonacci-sequence/Tcl/fibonacci-sequence-2.tcl

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Tcl
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2023-07-01 11:58:00 -04:00
proc fib {n} {
if {$n < 2} then {expr {$n}} else {expr {[fib [expr {$n-1}]]+[fib [expr {$n-2}]]} }
}