I wrote this simple program to ask the user to give temperature in Fahrenheit and then it will convert it into Celsius temperature equivalent using Perl programming language subroutine.

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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

# fahrenheit_celsius_subroutine.pl
# Author   : Jake R. Pomperada,MAED-IT,MIT
# Date     : April 7, 2020   Tuesday  12:21 PM
# Location : Bacolod City, Negros Occidental
# Email    : jakerpomperada@gmail.com
# Website  : http://www.jakerpomperada.com

sub Fahrenheit_To_Celsius
    $celsius = ($fahrenheit - 32) * 5 / 9;
sub  Convert_Celsius { 
    print("\tFahrenheit To Celsius Converter in Perl");
    print("\tGive Temperature in Fahrenheit : ");
    print "\t$fahrenheit degrees Fahrenheit is equivalent to ";
    printf("%.2f degrees Celsius.",$celsius);
    print("\t\tEnd of Program");

# Calling the Subroutine 

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