Select Code to Download

cake_number;first_price 

...
cake_3;9;
cake_4;7;
cake_9;8;

cake_number;second_price 

...
cake_3;5;
cake_6;9;
cake_10;1;

cake_number;frist_price;second_price;

...
cake_2;4;5;
cake_3;9;5;

my %hash_table_1;
open(INFILE_1, "<$infile_1");
...
close INFILE_1;
close INFILE_2;