We are going to cover all the topics of C programming.

Basic concept in C : - (like operators in C,data types, looping- if else, for, while, do while)

1. array, pointer, string, function, recursion, searching, sorting, file handling and another important thing is Data structure in c ( Stack, queue, linked list etc).
2. C language concept,syntax,data types,different type of loops and usage,pointers.
3. Life time of a variable? - ( ex: static & global variables has lifetime from start to end of the program. like we have to know for stack & heap variables)
4. Data memory model: 
   static area - static & global variables stored here 
   stack area - stack variables stored here ( it will expands & shrinks when the program is executed) 
   heap area - runtime variables (when we use malloc) stored here.
5. How the memory leak is happening with an example (we can explain it with malloc() and free() functions).
6. Function is very Important part of C Language. With the help of Function Programs are easy to write and understand. So there are some Key points to remember when deal with C Language Function :
1. A Function gets called when the Function name is followed by a semicolon(;)
2. A Function can call itself. Such a process is called "recursion".
3. A Function can be called from another Function, but a Function cannot be defined in another Function.
4. A Function can be called any number of times.
5. The order in which the Functions are defined in a Program and the order in which they get called need not necessarily be same.
6. Any Function can be called from any other Function.
7. A Function is defined when Function name is followed by a pair of braces in which one or more statements may be present.