File Streams
Now, we shall learn how to communicate with files using C++.
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 |
---|