【简答题】打开一个输出文件流的方法包括A. std::filesystem::path p{"out.txt"}; std::ofstream output{p};B. std::ofstream output{"out.txt"};C. std::filesystem::path p{"out.txt"}; std::ofstream output{}; output.open(p);D. std::fi...
【简答题】C++17中,构造路径对象正确的代码是A. namespace fs=std:filesystem; fs::path b{"C:/Users"}; b = b / "cyd";B. std::filesystem::path r{"C:\\Windows"}; r.append("System32");C. std::filesystem::path r{"C:\Windows"}; r += ...
【单选题】There are months in a year. September is the month.
【判断题】在长期里,总供给曲线是一条比较陡峭的向右上方倾斜的曲线。
【简答题】There are months in a year.