这是ssd4 的练习八。供你参考，但是不要完全copy，为了你自己的学习，也为了你的未来，请使用好-it is the exercise4 of ssd8. you can use it to complish your homework. best withes to you. believe yourself that you can make it perfectly

exercise4 of curso ssd4 .to use the files please extract them

ssd4 exercise4 carnegie mellon-ssd4 exercise4 carnegie mellon