ILOG CPLEX 11.0 User's Manual

char *inststr = NULL;char *envstr = NULL;/* Initialize the CPLEX environment */envstr = (char *) malloc (256);if ( envstr == NULL ) {fprintf (stderr, "Memory allocation for CPXputenv failed.\n");status = FAIL;goto TERMINATE;}else {inststr = (char *) getenv("MYAPP_HOME");if ( inststr == NULL ) {fprintf (stderr, "Unable to find installation directory.\n");status = FAIL;goto TERMINATE;}strcpy (envstr, "ILOG_LICENSE_FILE=");strcat (envstr, inststr);strcat (envstr, "\\license\\access.ilm");CPXputenv (envstr);}env = CPXopenCPLEX (&status);.Notes: This example assumes a Microsoft Windows file directory structure that requires anadditional backslash when specifying the path of the file containing the key. It also assumesthat the application uses an environment variable called MYAPP_HOME to identify thedirectory in which it was installed.The string argument to CPXputenv must remain active throughout the time ILOG CPLEXis active; the best way to do this is to malloc the string.The putenv Method for Java UsersHere is an example using Concert Technology for Java users:IloCplex.putenv("ILOG_LICENSE_FILE=\\license\\access.ilm");try {cplex = new IloCplex();}catch (IloException e) {System.err.println("Exception caught for runtime license:" + e);}158 ILOG CPLEX 11.0 — USER’ S MANUAL