Initializing help system before first use

# XPRSgetdblattrib

Purpose
Enables users to retrieve the values of various double problem attributes. Problem attributes are set during loading and optimization of a problem.
Topic area
Controls and Attributes
Synopsis
`int XPRS_CC XPRSgetdblattrib(XPRSprob prob, int attrib, double *p_value);`
Arguments

prob | The current problem.
attrib | Problem attribute whose value is to be returned. A full list of all available problem attributes may be found in Chapter Problem Attributes, or from the list in the xprs.h header file.
p_value | Pointer to a double where the value of the problem attribute will be returned.

Example
The following obtains the optimal value of the objective function and displays it to the console:

    double lpobjval;
    ...
    XPRSlpoptimize(prob,"");
    XPRSgetdblattrib(prob,XPRS_LPOBJVAL,&lpobjval);
    printf("The maximum profit is %f\n",lpobjval);

See also examples addmipsol.c, fixbv.c, globjpar.c, glrhspar.c, knapsack.c, loadlp.c, roundint.c, savesol.c, solenum.c, tableau.c, trimloss.c.
Related topics
XPRSgetintattrib, XPRSgetstrattrib.
Parent Topic Console and Library Functions

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