File Streams

File streams enable you to work with files. They need the header <fstream>. The file streams automatically manage the lifetime of their file.

Whether you use a file stream for input or output or with the character type char or wchar_t there are various file stream classes:

Class	Use
std::ifstream and std::wifstream	File stream for the input of data of type char and wchar_t.
std::ofstream and std::wofstream	File stream for the output of data of type char and wchar_t
std::fstream and std::wfstream	File stream for the input and output of data of type char and wchar_t.
std::filebuf and std::wfilebuf	Data buffer of type char and wchar_t.

⚠️ Set the file position pointer
File streams used for reading and writing have to set the file position pointer after the contents change.

Flags enable you to set the opening mode of a file stream. Here are a few of those flags:

Flag

...