como ejecutar pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1 sin contraseña

char *arg[] = {"pcp_recovery_node", "-h", "192.168.1.48", "-p", "9898", "-U", "pgpool", "-n", "1"};

string password = "";

#define LEN sizeof(arg) / sizeof(arg[0])

PGconn  *conn;
pgpool_recovery_node(LEN, arg, password);
conn = PQconnectdb("host = localhost dbname=postgres user=pgpool password=pgpool");