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File Handling

Lesson 22/27 | Study Time: 60 Min

What You Will Learn in This Live Session

1️⃣ Introduction to File Handling

✔ What is file handling, and why do we need it?
✔ Difference between text files (.txt) and binary files (.bin)
✔ File handling functions in C (stdio.h)

2️⃣ File Operations in C

✔ Opening a File (fopen())
✔ Closing a File (fclose())
✔ Reading from a File (fgetc(), fgets(), fread())
✔ Writing to a File (fputc(), fputs(), fwrite())
✔ Appending Data to a File (a mode in fopen())

3️⃣ File Modes in C

✔ "r" – Read mode
✔ "w" – Write mode (overwrites existing content)
✔ "a" – Append mode
✔ "r+", "w+", "a+" – Read/write modes

4️⃣ Working with Text Files

✔ Reading and writing characters (fgetc(), fputc())
✔ Reading and writing strings (fgets(), fputs())
✔ Handling formatted data using fprintf() and fscanf()

5️⃣ File Positioning and Seeking

✔ ftell() – Get the current position in a file
✔ fseek() – Move file pointer to a specific position
✔ rewind() – Reset file pointer to the beginning

6️⃣ Error Handling in File Operations

✔ Checking if a file exists before opening
✔ Handling file read/write errors