2025年3月 GESP C++ 4级单选题第15题｜真题与答案解析

下面哪种方式不能实现将字符串"Happy Spring!"输出重定向到文件log.txt（）。

cpp freopen("log.txt", "w", stdout); cout << "Happy Spring!" << endl; fclose(stdout);

cpp std::ofstream outFile("log.txt"); outFile << "Happy Spring!" << endl; outFile.close();

cpp std::ofstream outFile("log.txt"); cout << "Happy Spring!" << endl; outFile.close();

cpp ofstream log_file("log.txt"); streambuf* org_cout = cout.rdbuf(); cout.rdbuf(log_file.rdbuf()); cout << "Happy Spring!" << endl; cout.rdbuf(org_cout);