Random Access File in C | fseek(), ftell(), rewind() Explained | CS3251 Unit 5 | Anna University

Notes available in https://play.google.com/store/apps/details?id=com.learning.cseitexampreparation

In this Tamil tutorial, we explain Random Access File Handling in C programming, a key topic in Unit 5 of CS3251 – Programming in C (Anna University Regulation 2021).

Unlike sequential access, random file access allows direct access to any part of a file, making data retrieval faster and more efficient in large programs. This concept is crucial for advanced file operations in both academic and real-world coding.

📘 Topics Covered:

What is Random File Access in C?

Why Random Access is used over Sequential Access

Functions used: fseek(), ftell(), rewind()

Practical usage of random access in reading/writing records

Example: Directly updating student marks without reading whole file

Dry run and logic explanation in Tamil

Common mistakes and debugging tips

🎯 Best For:

CSE/IT students under Anna University (Regulation 2021)

Tamil learners preparing for lab viva and written exams

Developers seeking efficient data file manipulation

CS3251 Programming in C Unit 5 syllabus coverage

📺 For more clarity, watch the full Programming in C Tamil Playlist with each topic explained in a simple and structured way.

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