Write a perl program that reads from a file containing a list of names and then displays that list to a user. The program should then ask the user if they want to sign up on the list. If they say yes, then the program should get the name of the user and add it to the file containing the list of names. If the user does not want to sign up then the program should exit.

#!/usr/bin/perl

use warnings;

use strict;

my $file = 'File1';

my $name;

my %h = ( ansy => 'Yes', ansn => 'No' );

open(Handle, '>>$file') or die $!;

while(<Handle>){

  print $_;

}

print "Do you want to enter your name ? \n";

my $answer = <STDIN>;

chomp $answer;

print "You have entered input as '$answer' \n" ;

my %h = ( ansy => 'Yes', ansn => 'No' );

if( $answer eq $h{ansy} ) {

  # if condition is true then print the following

  printf "Please enter your name ? \n";

  my $answer1 = <STDIN>;

  chomp $answer1;

  printf "Your have entered '$answer1' and it will be added to list \n";

  print Handle '$answer1';

} elsif( $answer eq $h{ansn} ) {

  # if condition is true then print the following

  printf "You have entered No and we will exit";

  exit();

} else {

  # if none of the above conditions is true

  printf "please enter either Yes or No \n";

}

close(Handle);

Explanation:

Above Code will work as per requirements. File1 is the path of your file.

Allotment of resources to the running programs

Explanation:

Operating system is the software sectors of the computing device that helps in control and management of software, hardware and programming functions. It helps in allotment of requirements to same time or individually running programs through coordination.

Example-mac-OS, Linux,Microsoft Windows etc. Other options are incorrect because operating system is not activates in the computer unit for every single execution. It is a software unit and does not monitors program execution for same time period.