CPXgetcolindex() searches for the index number of the specified column in a CPLEX problem object.
The routine returns a zero on success, and a nonzero if an error occurs.
int CPXgetcolindex (CPXCENVptr env, CPXCLPptr lp, const char *lname_str, int *index_p);
The pointer to the CPLEX environment as returned by
A pointer to a CPLEX problem object as returned by
A column name to search for.
A pointer to an integer to hold the index number of the column with name
lname. If the routine is successful,
*index_p contains the index number, otherwise
*index_p is undefined.