printf to convert 200010809 to 2001-08-09

[Derrick (Thrawn01)]

@data[0]->[17] contains "20010809"

I've been tring to use printf to convert the 200010809 value out as
2001-09-08

$last_open = sprintf "%4d-%2d-%2d",@data[0]->[17];

However this does not work. I get "20010809- 0- 0"
Any sugesstions on how I should make this converstion with out adding alot
of overhead doing it ?


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