/* Copyright 2015-2022 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ struct A { A () : a_ (1) {} int do_it (int amount) { return a_ + amount; } int a_; }; struct B { B () : b_ (2) {} int do_it (int amount) { return b_ - amount; } int b_; }; struct C { C () : c_ (3) {} int do_it (int amount) { return c_ * amount; } int c_; }; struct D : public A, B, C { D () : d_ (4) {} int d_; }; int main () { D d; int var = 1234; var = d.A::do_it (1) + d.B::do_it (2) + d.C::do_it (3); // break here return 0; }