a=[1,2,3;4,5,6];
for i=1:1:2
filename=['C:\Users\Administrator\Desktop\',num2str(i),'.txt'];
save(filename,'a','-ascii');
end
https://blog.csdn.net/hengyaha/article/details/78995291
https://www.cnblogs.com/tsingke/p/13344020.html