Cube of a Number Solver Using Subroutine

I wrote this program to ask the user to give a number and then the program will compute the cube value of the given number using subroutine using Perl programming language.

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Program Listing

# cube_subroutine.pl
# Author   : Jake R. Pomperada,MAED-IT,MIT
# Date     : April 8, 2020   Wednesday  4:07 PM
# Location : Bacolod City, Negros Occidental
# Email    : jakerpomperada@gmail.com
# Website  : http://www.jakerpomperada.com


sub Cube_Solver {
     $Number_val = $_[0]; 
     $cube =   ($Number_val  *  $Number_val  *   $Number_val);
}

sub Main() {

    $Number_val=0; 
    print("\n");
    print("\tCube of a Number Solver Using Subroutine");
    print("\n\n");
  
    print("\tGive a Number  : ");
    chomp($Number_val=<STDIN>);

    Cube_Solver($Number_val);
    
    print("\n");
    printf("\tCube of a given number %d is = %d.",$Number_val,$cube); 
    print("\n\n");
    print("\t\tEnd of Program");
    print("\n\n");
}

# Calling the Main Subroutine to execute the program

 Main();