自编一个矩阵乘法的LINGO通用程序,并用此通用程序计算矩阵C 内容在图片里，一共两问

Model:

sets:
zh/1..4/:;
zl/1..4/:;
yl/1..3/:;
zjz(zh,zl):A;
yjz(zl,yl):B;
jgjz(zh,yl):C;
endsets
data:
A = 2 0.5 2 2.5
4 6 1 3
5 4 3 4
3 1 1.8 7;
B = 12 13 14
7 8 7
10 11 12
32 30 15;
enddata
@for(zh(i):@for(yl(j):C(i,j) = @sum(zl(k):A(i,k)*B(k,j))));

运行结果：
1 2 3
1 127.5 127 93
2 196 201 155
3 246 250 194
4 285 276.8 175.6