Retrieve the list of variables that participate in an SOS constraint, and the associated coefficients. The return value is the length of this list. If you would like to allocate space for the result before retrieving the result, call the method first with NULL array arguments to determine the appropriate array lengths.

int getSOS ( GRBSOS sos,
    GRBVar* vars,
    double* weights,
    int* typeP )

    sos: The SOS set of interest.

    vars: A list of variables that participate in sos.

    weights: The SOS weights for each participating variable.

    typeP: The type of the SOS set (either GRB_SOS_TYPE1 or GRB_SOS_TYPE2).

    Return value:

    The length of the result arrays.