Ruby2

number = gets.chomp.to_i



def get_prime_no_upto(number)
  start = 2
  count = 0
  while count < number
    @primes = (start..number).to_a
    (start..number).each do |no|
      (start..no).each do |num|
        if ( no % num  == 0) && num != no
          @primes.delete(no)
          count += 1
          break
        end
      end
    end
  end
  @primes
end

get_prime_no_upto(number)

 p @primes