Re: [Help-glpk] Strange Error with if/then/else

[Michael Hennebry]

On Sat, 5 Apr 2008, Jonathan Klein wrote:
> set PEOPLE;
> var x{i in PEOPLE} binary;
> maximize Anzahl : sum{i in PEOPLE} (if x[i]==1 then 1 else 0);
> data;
> set LEUTE:=Hans Joachen Peter Klaus;
> end;
>
> And i get the Error: operator preceding == has invalid type

x[i] is a variable.

-- 
Michael   address@hidden
"Those parts of the system that you can hit with a hammer (not advised)
are called Hardware;  those program instructions that you can only
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