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- // Copyright (C) 2008-2018 Lorenzo Caminiti
- // Distributed under the Boost Software License, Version 1.0 (see accompanying
- // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
- // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
- //[n1962_sum
- #include <boost/contract.hpp>
- #include <cassert>
- int sum(int count, int* array) {
- int result;
- boost::contract::check c = boost::contract::function()
- .precondition([&] {
- BOOST_CONTRACT_ASSERT(count % 4 == 0);
- })
- ;
- result = 0;
- for(int i = 0; i < count; ++i) result += array[i];
- return result;
- }
- int main() {
- int a[4] = {1, 2, 3, 4};
- assert(sum(4, a) == 10);
- return 0;
- }
- //]
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