Video Lectures from youtube

Function Introduction (IIT Kanpur)

Function Arguements (IIT Kanpur)

Function Calls            (IIT Kanpur)

Function Evaluation  (IIT Kanpur)

Scope of Variables    (IIT Kanpur)

Recursion (IIT Kanpur)

Recursion Example (IIT Kanpur)

Pointer Introduction (IIT Kanpur)

Pointer Visual Representation (IIT Kanpur)

Preprocessor Directives Part-I

Preprocessor Directives Part-II

Preprocessor Directives Part-III

Structure Part-1

Structure Part-2

Union

Array of Structure

Pointer to Structure

Enumerated Data Type

typedef

Lec 27 Some examples on functions 

Area of Rectangle in C Programming(Using The Function) 

Recursion in C [Hindi] | Kumar Tutorials 

Understanding Recursion in C (in Hindi) 

C Program to generate fibonacci series using recursion in Hindi Lec-45 

File Handling (Part 1) - C programming in Hindi - By IIT Kanpur 

Files in C | C Language Tutorial 

File Management fopen() and fclose() in C (HINDI) 

FILE - fopen() AND fclose() function -102 

File Handling Characters in C Programming Tutorial 

Reading the contents of a file In C | File Handling