This is one way of achieving your goal, i'm assuming the end outcome won't be to print what option you have selected.

#!/usr/bin/perl -w

use strict;

check_input();

sub check_input {

    CHECK : while (1) {
        &menu;
        my $input= (<STDIN>);
        chomp $input;

        print "You have chosen option 1\n" if ($input == 1);
        print "You have chosen option 2\n" if ($input == 2);
        print "You have chosen option 3\n" if ($input == 3);
        print "You have chosen option 4\n" if ($input == 4);
        print "You have chosen option 5\n" if ($input == 5);
        print "You have chosen option 6\n" if ($input == 6);
        last CHECK if ($input == 7);
    }
print "Finished\n";
}

sub menu {
print "Enter a number for the option you want\n";
print "1) Cancel FINAL Schedule for machine A:   \n";
print "2) Submit new FINAL schedule:    \n";
print "3) Ignore Wrkld:    \n";
print "4) Run around the block:   \n";
print "5) Buy a new car:    \n";
print "6) order Pizza:   \n\n";
print "7) exit:   \n\n";
}
[download]

Hope that helps