lc() function in Perl returns a lowercased version of VAR, or $_ if VAR is omitted.
VAR: Sentence which is to be converted to lower case
Lowercased version of VAR, or $_ if VAR is omitted
Original String : GEEkS FoR geEkS Changed String : geeks for geeks
Original String : G33kS F0R g3EkS Changed String : g33ks f0r g3eks
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