Average of Number Using Hash in Perl

I wrote this program to ask the user to give key of the hash and then the program will accept a series of numbers based on the key values in the hash and compute the sum and the average of the numbers using Perl programming.

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My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.
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Sample Program Output

Program Listing

# average_numbers_hash.pl # Author : Jake R. Pomperada,MAED-IT,MIT # Date : April 15, 2020 Tuesday 9:12 AM # Location : Bacolod City, Negros Occidental # Email : jakerpomperada@gmail.com # Websites : http://www.jakerpomperada.com # http://www.jakerpomperada.blogspot.com @$number_values=(1..50); my %val_num = (1 => 5, 2 => 10, 3 => 15, 4 => 20, 5 => 25, ); printf("\n"); printf("\tAverage of Number Using Hash in Perl\n"); printf("\n"); printf("\tEnter The Array Size Based on the Key Values (1..5) : "); chomp($num_input=<STDIN>); printf("\n"); for ($a=0; $a<$val_num{$num_input}; $a++) { printf("\tGive Value in Item No. %d: ",$a+1); chomp($number_values[$a]=<STDIN>); $sum+=$number_values[$a]; } $average = ($sum/$a); print("\n"); printf("\tThe total sum is %.2f.\n",$sum); printf("\tThe average is %.2f.",$average); printf("\n\n"); printf("\t\tEnd of Program"); printf("\n\n");