源代码:
#!/usr/bin/ruby # -*- coding: UTF-8 -*- $age = 5 case $age when 0 .. 2 puts "婴儿" when 3 .. 6 puts "小孩" when 7 .. 12 puts "child" when 13 .. 18 puts "少年" else puts "其他年龄段的" end
运行结果：
#!/usr/bin/ruby # -*- coding: UTF-8 -*- $age = 5 case $age when 0 .. 2 puts "婴儿" when 3 .. 6 puts "小孩" when 7 .. 12 puts "child" when 13 .. 18 puts "少年" else puts "其他年龄段的" end