function mc1=mc1(a,s,p0)
mc=zeros(1,10000);
for i=1:10000
     u=randn(1,20);
   for j=1:20
    pp=p0+p0*(a/20+s*u(j)/sqrt(20));
    p0=pp
   end
mc(i)=p0;
end

调试错误信息是：

??? Input argument "p0" is undefined.

Error in ==> mc1 at 6
    pp(k)=p0+p0*(a/20+s*u(j)/sqrt(20));

[此贴子已经被作者于2008-7-20 16:28:55编辑过]