int GRBsetcharattrarray ( GRBmodel *model,
    const char *attrname,
    int start,
    int len,
    char *values )

Set the values of a character-valued array attribute.

Return value:

A non-zero return value indicates that a problem occurred while setting the attribute. Refer to the Error Code table for a list of possible return values. Details on the error can be obtained by calling GRBgeterrormsg.


model: A loaded optimization model, typically created by routine GRBnewmodel or GRBreadmodel.

attrname: The name of a character-valued array attribute. Available attributes are listed and described in the Attributes section of this document.

start: The index of the first entry in the array to set.

len: The number of array entries to set.

values: A pointer to the desired new values for the specified sub-array of the attribute. Note that the values array must be as long as the sub-array to be changed.

Example usage:

  error = GRBsetcharattrarray(model, "VType", 0, 4, vtypes);