C++程序  |  22行  |  503 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.
//
//===----------------------------------------------------------------------===//

// <ccomplex>

#include <ccomplex>

#ifndef _LIBCPP_VERSION
#error _LIBCPP_VERSION not defined
#endif

int main()
{
    std::complex<double> d;
}