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    2. 在 C++ 中创建文件

      Creating files in C++(在 C++ 中创建文件)
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                本文介绍了在 C++ 中创建文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                问题描述

                我想用 C++ 创建一个文件,但我不知道该怎么做.例如,我想创建一个名为 Hello.txt 的文本文件.

                I want to create a file using C++, but I have no idea how to do it. For example I want to create a text file named Hello.txt.

                有人可以帮我吗?

                推荐答案

                一种方法是创建 ofstream 类的一个实例,并使用它来写入您的文件.这是一个网站链接,其中包含一些示例代码,以及有关大多数 C++ 实现可用的标准工具的更多信息:

                One way to do this is to create an instance of the ofstream class, and use it to write to your file. Here's a link to a website that has some example code, and some more information about the standard tools available with most implementations of C++:

                ofstream 参考

                为了完整起见,这里有一些示例代码:

                For completeness, here's some example code:

                // using ofstream constructors.
                #include <iostream>
                #include <fstream>  
                
                std::ofstream outfile ("test.txt");
                
                outfile << "my text here!" << std::endl;
                
                outfile.close();
                

                您想使用 std::endl 来结束您的行.另一种方法是使用 ' ' 字符.这两件事是不同的, std::endl 刷新缓冲区并立即写入您的输出,而 ' ' 允许输出文件将所有输出放入缓冲区,并可能稍后写入.

                You want to use std::endl to end your lines. An alternative is using ' ' character. These two things are different, std::endl flushes the buffer and writes your output immediately while ' ' allows the outfile to put all of your output into a buffer and maybe write it later.

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