C++ File Handling

What is File Handling?

File handling allows programs to store and retrieve data from files.

C++ uses the fstream library for file operations.

Types of File Streams

• ofstream – write to files
• ifstream – read from files
• fstream – read and write

Writing to a File

Reading from a File

Checking File Open

Appending to a File

Reading Line by Line

Full Example

Why File Handling is Important

• Store data
• Read configurations
• Logging

Common Mistakes

• Forgetting to close files
• Not checking file open
• Wrong file mode

Practice

Write a program that writes to a file and then reads and prints it.

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