Prime Number Checker Using For Loop Statement in Perl

I wrote this program to ask the user to give a number and then the program will check if the given number is a prime number or not using Perl programming language.

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Program Listing

# prime_num_for.pl

# It will ask the user to give a number and then the program

# will check and determine if the given number is a Prime Number or Not

# number using for loop statement

# Author   : Jake R. Pomperada,MAED-IT,MIT

# Date     : April 5, 2020   Sunday  3:38 PM

# Location : Bacolod City, Negros Occidental

# Email    : jakerpomperada@gmail.com

# Website  : http://www.jakerpomperada.com

$num=0; $i=0; $flag=0;

print("\n");

print("\tPrime Number Checker Using For Loop Statement in Perl");

print("\n\n");

print("\tGive a Number : ");

chomp($num=<STDIN>);

for ($i=2; $i<$num/2; $i++) {

    if ($num % $i == 0) 

    {

      $flag = 1;  

      break;

    }

}

print("\n");

if ($flag == 1) {

    print("\t$num is NOT a Prime Number.");

}

else {

    print("\t$num is a Prime Number.");

}

print("\n\n");

print("\tEnd of Program");

print("\n\n");