C++ File Input/Output Streams

C++ Files and Streams

• The C++ header files iostream and filesystem are essential for file processing, providing classes and functions for working with files, directories, and paths in a platform-independent manner.

File Organization and Manipulation

• The ios class is the base class for all file processing classes.
• The filesystem namespace provides several member functions for performing input/output operations.

Creating Directories

• To create a directory, use the fs::create_directory() function, specifying the directory path as an argument, e.g., fs::create_directory("…/FileOrganization/").

Checking File Existence

• To check if a file exists, use the fs::exists() function, passing the file path as an argument, e.g., fs::path filepath="…/FileOrganization/mina.txt"; if(fs::exists(filepath)){ ………….}.

Iterating over Directories

• To iterate over directories, use the fs::directory_iterator() function, passing the directory path as an argument, e.g., fs::path dirpath="…/FileOrganization/"; for(const auto& entry : fs::directory_iterator(dirpath)) { std::cout …… }.