Getting number of tuples affected

I was looking for a function to return the number of tuples an update
returned, but couldn't find anything for libpq++. Any ideas?

I also noticed a bug in the docs worth mentioning...
http://postgresql.nextpath.com/doxlist.html

        PgDatabase data;
        data.exec("create table foo (a int4, b char16, d float8)");
        data.exec("copy foo from stdin");
        data.putline("3\etHello World\et4.5\en");
        data.putline("4\etGoodbye World\et7.11\en");
        &...
        data.putline(".\en");
        data.endcopy();

There is no PgDatabase::exec


thanks
-Michael