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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
#include <cassert>
//[introduction_comments
void inc(int& x)
// Precondition: x < std::numeric_limit<int>::max()
// Postcondition: x == oldof(x) + 1
{
++x; // Function body.
}
//]
int main() {
int x = 10;
inc(x);
assert(x == 11);
return 0;
}
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