libstdc++-v3/testsuite/tr1/6_containers/tuple/element_access/get.cc

   1 // 2004-09-23 Chris Jefferson <chris@bubblescope.net>
   2
   3 // Copyright (C) 2004-2020 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // Tuple
  21
  22 #include <tr1/tuple>
  23 #include <testsuite_hooks.h>
  24
  25 using namespace std::tr1;
  26
  27 int
  28 main()
  29 {
  30   int j=1;
  31   const int k=2;
  32   tuple<int,int &,const int&> a(0,j,k);
  33   const tuple<int,int &,const int&> b(1,j,k);
  34   VERIFY(get<0>(a)==0 && get<1>(a)==1 && get<2>(a)==2);
  35   get<0>(a)=3;
  36   get<1>(a)=4;
  37   VERIFY(get<0>(a)==3 && get<1>(a)==4);
  38   VERIFY(j==4);
  39   get<1>(b)=5;
  40   VERIFY(get<0>(b)==1 && get<1>(b)==5 && get<2>(b)==2);
  41   VERIFY(j==5);
  42 }
  43