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$ perl -v

...
$ perl -e 'printf "%.2f\n%.2f\n", 0.335, 1.335;'
0.34
1.33

C:\>perl -v
...
C:\>perl -e "printf qq{%.2f\n%.2f\n}, 0.335, 1.335;"
0.34
1.34

$ perl -v

This is perl, v5.8.8 built for x86_64-linux-gnu-thread-multi
...
C:\>perl -e "printf qq{%.40f\n%.40f\n}, 0.335, 1.335;"
0.3350000000000000200000000000000000000000
1.3350000000000000000000000000000000000000