Boost_1_39_0/libs/test/example/cla/default_value.cpp

   1 //  (C) Copyright Gennadiy Rozental 2001-2008.
   2 //  Distributed under the Boost Software License, Version 1.0.
   3 //  (See accompanying file LICENSE_1_0.txt or copy at
   4 //  http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/test for the library home page.
   7
   8 // Boost.Runtime.Param
   9 #include <boost/test/utils/runtime/cla/named_parameter.hpp>
  10 #include <boost/test/utils/runtime/cla/parser.hpp>
  11
  12 namespace rt  = boost::runtime;
  13 namespace cla = boost::runtime::cla;
  14
  15 // STL
  16 #include <iostream>
  17
  18 int main() {
  19     char* argv[] = { "basic" };
  20     int argc = sizeof(argv)/sizeof(char*);
  21
  22     try {
  23         cla::parser P;
  24
  25         P << cla::named_parameter<int>( "abcd" ) - ( cla::default_value = 10 );
  26
  27         P.parse( argc, argv );
  28
  29         std::cout << "abcd = " << P.get<int>( "abcd" ) << std::endl;
  30     }
  31     catch( rt::logic_error const& ex ) {
  32         std::cout << "Logic error: " << ex.msg() << std::endl;
  33         return -1;
  34     }
  35
  36     return 0;
  37 }
  38
  39 // EOF