complete program to find the prime number in ruby - very important

 

def is_prime_number(number=0)

  is_prime=true

  is_prime = false if number == 0

  is_prime = false if number == 1

    for num in 2..(number+1)/2

    if number%num==0 

      is_prime=false

      break

    end

  end

  #return value

  return is_prime

end

begin

  puts "Enter any number:"

  #take input

  number = Integer(gets.chomp)

if(is_prime_number(number))

  puts "#{number} is prime number"

else

  puts "#{number} is not a prime number"

end

rescue 

  puts "Enter proper Number."

end