File Handling in C Programming 📁

📁 Welcome to the C Programming File Handling Tutorial!
In this video, you’ll learn how to create, read, write, and append files in C — a fundamental concept for saving data permanently in programs.

File handling allows C programs to store and retrieve information from text or binary files, making your programs more powerful and interactive.

💡 What You’ll Learn in This Video

✅ What are Files and why they’re used in C
✅ How to create, open, and close files using fopen() and fclose()
✅ Understanding FILE pointers in C
✅ Different file modes — "r", "w", and "a"
✅ How to write to files using fprintf()
✅ How to append new content without deleting old data
✅ The importance of closing files properly
✅ Real examples of file handling in C programs

💻 Topics Covered

1️⃣ File Handling Overview in C
2️⃣ FILE Pointer and fopen() Function
3️⃣ File Modes: Read, Write, Append
4️⃣ Creating a File using "w" Mode
5️⃣ Writing Data to a File using fprintf()
6️⃣ Appending Data to a File using "a" Mode
7️⃣ Closing Files Properly with fclose()

⚙️ Commonly Used File Handling Functions
Function Description
fopen() Opens or creates a file
fclose() Closes an open file
fprintf() Writes formatted data to a file
fscanf() Reads formatted data from a file
fgets() Reads a line from a file
fputs() Writes a line to a file
🎯 Why File Handling is Important

Enables data storage for later use

Makes your programs interactive and persistent

Essential for project-based and real-world programming

Commonly asked topic in college exams and interviews

🧠 Example Code Covered
FILE *fptr;
fptr = fopen("filename.txt", "w");
fprintf(fptr, "Some text");
fclose(fptr);


💡 This code creates a file, writes text to it, and then safely closes it.

🧩 Who This Video Is For

🎓 Students preparing for C programming exams

💻 Beginners learning C fundamentals

🧠 Developers who want to understand file handling deeply

🧾 Key Takeaways

Master file creation and data writing

Learn difference between write and append modes

Understand how C interacts with the file system

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