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#include <iostream>
#include <filesystem>
namespace fs = std::filesystem;
using namespace std;
int main()
{
cout << fs::exists("fs.cc") << '\n';
fs::file_status stat = fs::status("fs.cc");
cout << exists(stat) << '\n';
cout << (stat.type() != fs::file_type::not_found) << '\n';
cout << oct;
fs::perms required = fs::perms::owner_read | fs::perms::owner_write;
cout << ((stat.permissions() & required) == required) << '\n';
cout << static_cast<size_t>(stat.permissions()) << '\n';
error_code ec;
fs::rename("fs.cc", "fs2.cc", ec);
cout << ec << '\n';
fs::rename("fs2.cc", "fs.cc", ec);
cout << ec << '\n';
}
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