How do I create a new file using std::fstream?

Std::fstream File Creation

When attempting to utilize std::fstream for file input/output, users may encounter the issue of an existing file being required for successful access. This can lead to error messages such as "No such file or directory" due to the absence of the desired file.

To resolve this issue, one must carefully consider the flags employed during the file opening process. Specifically, the std::fstream::in mode, which is intended for reading existing files, should be omitted if file creation is desired.

Instead, one should utilize std::fstream::trunc to specify that any existing file with the same name should be truncated and overwritten with the new content. This flag, in conjunction with std::fstream::binary and std::fstream::out, will create the file if it does not already exist and write to it.

<code class="cpp">  std::fstream my_stream
  my_stream.open("my_file_name",std::fstream::binary | std::fstream::trunc |std::fstream::out);</code>

By excluding std::fstream::in and incorporating std::fstream::trunc, the file creation functionality can be achieved, ensuring seamless file input/output operations.

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