Question

求救呀，大学C++题目！也不是挺难~ 100分！

1.创建一个Matrix类和Vector类，并利用友元函数来实现M3×3的矩阵与向量V3×1相乘，要求：
（1）在测试程序体内（main函数内）定义一个Matrix对象和一个Vector对象，其对象的数 据可以通过屏幕输入，但要求有提示语句
（2要求编写一个完整的可运行源程序

2.大学一般有这样几类人，学生，职员和在职读书的教师等，大学一般有这样几类人，学生，职员和在职读书的教师等，请编写这几类人员的class类型。

3.A time stamp is a value that represent an instant time.A time stamp can be used to record when an event occurs.In a business,for example,we might used one time stamp to record when an invoice is received and another time stamp to record when the corresponding payment is sent.
Create a TimeStamp class that can be used to
(1)Set a time stamp to record when an event occurs;
(2)Print a time stamp as an integer;
(3)print a time stamp as a string;
(4)Decompose a time stamp into a year,a month,a day,an hour,a minute,and a second so that these can be printed separately;
The class's public interface should include methods to provide these services.

赶时间呀！求各位帮忙，不一定要全对，错一点没关系的！全对更好！~~~~三天内！
谢了~
我晕~我做得出就不会到这来了。这是我做不出的一部分题目~麻烦来个高手啊~不一定要全对~能答多少算多少

Answer 1

人有两件宝，双手和大脑。
所以，这些题还是你自己想
加油！你一定成功！

Answer 2

你是天才 你不会 我不是 我更不会 你好好研究研究吧 我不如你 我认了 你加油吧

Answer 3

蒽