25 lines
559 B
C++
25 lines
559 B
C++
|
|
// 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;
|
|
}
|
|
|