学习lingo第二天，求 改错 代码已贴

model:
sets:
object/1..3/:f;
endsets
data:
a,b=3,4;
enddata
f(1)=a*@sin(x);
f(2)=b*@cos((x);
f(3)=a*@cos(x)+b*@sin(x);
min=@smax(f(1),f(2),f(3));
@bnd(0,x,1.57);
end

呃.............手误啊，楼主，其实就是多了一个括号，f(2)=b*@cos(x); 你的COS这个有两个左括号 。

这个数据输入的程序运行不了
sets:
myset/@file(*C:\Users\Administrator\Desktop\myfile.ldt*)/:@file(*C:\Users\Administrator\Desktop\myfile.ldt*);
endsets
data:
cost=@file(*C:\Users\Administrator\Desktop\myfile.ldt*);
need=@file(*C:\Users\Administrator\Desktop\myfile.ldt*);
supply=@file(*C:\Users\Administrator\Desktop\myfile.ldt*);
enddata
min=@sum(myset(i):ordered(i)*cost(i));
@for(myset(i):ordered(i)<supply(i);ordered(i)>need(i)));
end
下面是桌面上的myfile.ldt的txt文档
Seattle,Detroit,Chicago,Denver~
Cost,need,supply,ordered~
12,28,15,20~
1600,1800,1200,1000~
1700,1900,1300,1100