📂 C++ File I/O (Input/Output)

C++ can write to and read from files using <fstream>. We use ofstream to write, ifstream to read.

📚 Example: Writing & Reading a File

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💡 Pro Tip: Always close your file streams after you're done. Open files lock resources until they're closed.

🔧 Syntax Breakdown

#include <fstream> — gives access to file streams
ofstream outFile("filename.txt") — creates/open file to write
outFile << "text"; — writes to file
ifstream inFile("filename.txt") — opens file for reading
getline(inFile, var) — reads one line into a string variable
close() — closes the file stream