-----------------------------------------------------------------
clc;
for i=1:9;
printf('please input data number %d',i);
y(i)=input('=');
end
time=8:1:16;
product=[y(1),y(2),y(3),y(4),y(5),y(6),y(7),y(8)];
plot2d(time,product,style=-2);
plot2d(time,product);
