Re: MathProg, glpk and C language

On Wed, 4 Oct 2017, john tass wrote:

> One possible way I suppose that is to use the API's of Glpk inside that
> function, using #include "glpk.h". But this way has the following drawback:
> in order to declare a structural variable of my model, say X1, I have to
> write something like glp_set_col_name(lp, 1, "x1"); That means that I
> declare the X1 variable by a hard-code. But my model is quite large, having
> hundreds of variables. In addition, I do not know in advance the exact
> number of them since they should be created dynamically. As you understand

GLPK does not require you to name your variables at all.
Using GLPK's API, I only named variables if I wanted GLPK to print.
Even then, I generated the names with the program.
How else with a variable number of names?

With MathProg, my program would have trouble reading the solution.
What column was X[7]?
What name did X[7] have?
At the time, and maybe still,
how GLPK's MathProg generated names was not documented.

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Michael   [email protected]
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