Thanks so much. I am trying to rewrite this program by using the foreach and push function. I think I am not right, can hint me? 
#!/usr/bin/perl -w 
use strict; 
my @primes = (2,3,5,7,11,13,17,19,23,29,31,37,41,43,47);


sub listprimes { 
my $n = shift;
my $i = 0; 
my $answer = ""; 

foreach $x ($primes[$i]<=$n) { 
  push $x{$n}
 }
 

 sub random {
 my($a,$b) = @_;
 return int(rand($b-$a+1))+$a;
 } 

my $a = random(10,50);
my $f = listprimes($a);
print "$f\n";

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In reply to Re^4: Perl program - I hope I can more understand my code by brianphan
in thread Perl program - I hope I can more understand my code by brianphan

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