How to Properly Write a std::string to a Text File in C ?

How to Write to a Text File Using std::string

When attempting to write a std::string to a file, you may encounter a situation where characters appear as boxes rather than the intended text. This is because the write() method stores binary data in the string object, including a pointer and the data length.

However, writing to a text file requires a different approach. The recommended method is to utilize an ofstream (out-file-stream), which behaves similarly to std::cout but directs output to a file.

To write to a text file using std::string, you can follow these steps:

1. Open an ofstream object to represent the desired file.
2. Use the << operator (as you would with std::cout) to write the std::string to the ofstream.
3. Close the ofstream to write the changes to disk.

An example code snippet:

#include <fstream>
#include <string>

int main()
{
    std::string input;
    std::cin >> input;
    std::ofstream out("output.txt");
    out << input;
    out.close();
    return 0;
}<p><strong>Note:</strong> The out.close() call is not strictly necessary, as the ofstream destructor will automatically handle this when out goes out of scope.</p>
<p>If you need to write to a file in binary form, use the c_str() method of the std::string to obtain the actual data:</p>
<pre class="brush:php;toolbar:false">write.write(studentPassword.c_str(), studentPassword.size());

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