class Man
def initialize(name,sex)
@name = name
@age = 16
@sex = sex
end
# 只读
def get_name
return @name
end
# 只写
def set_age(age)
@age = age
end
# 读写
def get_sex
return @sex
end
def set_sex(sex)
@sex = sex
end
end
t = Man.new("Jim","male");
puts t.get_name
puts t.get_sex
t.set_sex("man")
puts t.get_sex
t.set_age(22)

class Man
def initialize(name,sex)
@name = name
@age = 16
@sex = sex
end
# 只读
def name
@name
end
# 只写
def age=(age)#这里等号不能有空格
@age = age
end
# 读写
def sex
@sex
end
def sex=(sex)
@sex = sex
end
end
t = Man.new("Jim","male")
puts t.name
puts t.sex
t.sex = "man"
puts t.sex
t.age = 22
puts t.age

s = 1
begin
s = 1/0
puts s
rescue
puts "error!"
end

s = 1
begin
s = 1/0
puts s
rescue
puts "error!"
retry
end

begin
raise "test"
rescue
puts "error!"+$!
# retry
end

s = 1
begin
s = 1/0
rescue
puts "error!"+$!
# retry
ensure 
puts "finished!"
end
puts "------------"
s = 1
begin
s = 1/2
rescue
puts "error!"+$!
# retry
ensure 
puts "finished!"
end