CPXchgobj

Description

The routine CPXchgobj() is used to change the objective coefficients of a set of variables in a CPLEX problem object.

The routine returns a zero on success, and a nonzero if an error occurs.

int CPXchgobj (CPXCENVptr env, CPXLPptr lp, int cnt, const int *indices, const double *values);

Arguments

The pointer to the CPLEX environment as returned by CPXopenCPLEX().

A pointer to a CPLEX problem object as returned by CPXcreateprob().

An integer that indicates the total number of objective coefficients to be changed, and thus specifies the length of the arrays indices and values.

An array of length cnt containing the numerical indices of the columns corresponding to the variables for which objective coefficients are to be changed.

An array of length cnt containing the new values of the objective coefficients of the variables specified in indices.

status = CPXchgobj (env, lp, cnt, indices, values);