Love it! I am new (this morning) to LOLCODE, and I haven't laughed this hard for years.
Anyway, I thought I'd make the output more LOLCATish. I only did the Emglish part.
Not sure how to use git, so I hope it's OK to paste the English portion here.
HAI 1.4
BTW special characters sadly not supported
I HAS A JEDEN
I HAS A DWA
I HAS A EX
I HAS A LNG
VISIBLE "Chooz langwich."
VISIBLE "1. Inglush"
VISIBLE "2. polski"
GIMMEH LNG
LNG, WTF?
OMG "1" BTW English
VISIBLE ":)Welcom 2 calculator. :)Entr furst numbr:"
GIMMEH JEDEN
VISIBLE " :)Entr secund number:"
GIMMEH DWA
JEDEN IS NOW A NUMBAR
DWA IS NOW A NUMBAR
BOTH SAEM DWA AN 0.0, O RLY?
YA RLY
VISIBLE ":)Chooz yr operashun: :)1. Sum dem:)2. Diff dem :)3. Multuply dem :)4. Div dem"
GIMMEH EX
EX, WTF?
OMG "1"
VISIBLE SUM OF JEDEN AN DWA
GTFO
OMG "2"
VISIBLE DIFF OF JEDEN AN DWA
GTFO
OMG "3"
VISIBLE PRODUKT OF JEDEN AN DWA
GTFO
OMG "4"
VISIBLE "U not smart - zero into numbr is no gud"
GTFO
OMGWTF
VISIBLE "Choose teh operashun thru enterin numbr i gaev u."
GTFO
OIC
NO WAI
VISIBLE ":)Choose yr operation: :)1. Sum dem:)2. Diff dem :)3. Multuply dem :)4. Div dem"
GIMMEH EX
EX, WTF?
OMG "1"
VISIBLE SUM OF JEDEN AN DWA
GTFO
OMG "2"
VISIBLE DIFF OF JEDEN AN DWA
GTFO
OMG "3"
VISIBLE PRODUKT OF JEDEN AN DWA
GTFO
OMG "4"
VISIBLE QUOSHUNT OF JEDEN AN DWA
GTFO
OMGWTF
VISIBLE "Chooz teh operashun thru enterin a numbr I gaev u."
GTFO
OIC
OIC
GTFO