Ruby_day[1]控制流2

summary:

　　1: puts "s in #{user_input}" 和puts 's in #{user_input}'不同，前者#{user_input}会输出user_input的值,后者只是输出鸳原样,s in #{user_input}

　　

 1 print "Thtring, pleathe!: "
 2 user_input = gets.chomp
 3 user_input.downcase!
 4 
 5 if user_input.include? "s"
 6   user_input.gsub!(/s/, "th")
 7 else
 8   puts "Nothing to do here!"
 9 end
10   
11 puts "Your string is: #{user_input}"

 

(As a general rule, Ruby methods that end with ? evaluate to the boolean values true or false.

posted @ 2014-10-22 20:44  pwn_pjy  阅读(172)  评论(0)    收藏  举报