Ruby program to count the number of digits in a number

=begin
Ruby program to count the number of digits
=end

puts "Enter the number:"
num=gets.chomp.to_i

temp=num
count=0

while (temp>0)
    count+=1
    temp=temp/10
end

puts "#{num} has #{count} digits"

Output:

RUN 1:
Enter the number
89744
89744 has 5 digits

RUN 2:
Enter the number
8171627331
8171627331 has 10 digits