基本语句 输出语句 print print "hello..." print "hello..." --- hello...hello... puts puts "hello..." puts "hello..." --- hello... hello... p p "hello..." p "hello..." --- "hello..." "hello..." 字符串中变量引用 user_name = "yxy" puts "邢台第一刀客：#{user_name}" --- 邢台第一刀客：yxy