# -*- coding: UTF-8 -*-

#  E3.10-5.rb   演示break, next, redo, retry

puts "演示break"

c='a'

  for i in 1..4

    if i == 2 and c =='a'

      c = 'b'

      print "\n"

      break

    end

    print i,c," "

  end

 print i,c,";","\n"

 puts "end","==========================\n\n"

puts "演示next"

c='a'

  for i in 1..4

    if i == 2 and c =='a'

      c = 'b'

      print "\n"

      next

    end

    print i,c," "

  end

  puts "\n","==========================\n\n"

puts "演示redo"

c='a'

  for i in 1..4

    if i == 2 and c =='a'

      c = 'b'

      print "\n"

      redo

    end

    print i,c," "

  end

  puts "\n============================\n\n"