C++程序  |  25行  |  576 B

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <chrono>

// duration

// template <class Rep2>
//   explicit duration(const Rep2& r);

// treat_as_floating_point<Rep2>::value shall be false

#include <chrono>

int main()
{
    std::chrono::duration<int> d(1.);
}