ns-2中Tcl语言中类的使用<3>

Class mom
mom instproc greet {} {  ;#注意greet后面的空格然后才是{} ,一定注意要有空格
$self instvar age_
puts "$age_ year old mom say:
How are you doing?"
}


Class kid -superclass mom
kid instproc greet {} {
$self instvar age_
puts "$age_ year old kid say:
what's up, dude?"
}


mom a    ;#类的声明 就这样写 不要写成set a [new mom]
a set age_ 45   ;#赋值age_
kid b
b set age_ 15


a greet  ;#调用greet函数

b greet

结果运行如下

45 year old mom say:
How are you doing?
15 year old kid say:
what's up, dude?