【Ruby on Rails 学习四】简单的代码快和错误处理

  1 sum = 0
  2 i = 1
  3 while true
  4     sum += i
  5     i += 1
  6     break if i == 5001
  7 end
  8 
  9 sum = 0
 10 (1..5000).each{|i|
 11     sum += i
 12 }
 13 puts sum

  1 a = 100
  2 
  3 while true
  4     b = gets.to_i
  5     begin
  6         puts a/b
  7     rescue Exception => e
  8         puts "请不要输入 零"
  9         puts e
 10     end
 11 end
 12 

$ ruby 07error.rb
1
100
0
请不要输入 零
divided by 0