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Data Structures and Algorithms C++ Fundamentals

File Handling

Lesson 31/120

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Persistence

File Handling

Allows C++ programs to read from and write to external files on the disk using the <fstream> library.

ofstream

Stream class to write on files.

ifstream

Stream class to read from files.

fstream

Stream class to both read and write.

THE FILE WORKFLOW

1. Open

2. Read/Write

3. Close

Always close your files using .close() to ensure data is flushed and resources are released.