History of C Importance of C – Basic Structures of C Programs – Programming Style – Executing a ‘C’ Program Introduction - Character set - C tokens - keyword & Identifiers - Constants - Variables - Data types - Declaration of variables – Declaration of Storage class - Assigning values to variables

Arithmetic,Relational,Logical,Assignment,Increment and Decrement, Conditional, Bitwise, Special operators - Arithmetic Expressions - Evaluation of expression - Mathematical functions Introduction - if, if...else, nesting of if...else statements - else if ladder - The switch statement- The goto Statement.

Looping: Introduction- the while statement- the do statement – the for statement - Jumps in loops. One Dimensional Arrays – Two Dimensional Arrays - Multi dimensional array Declaring & Initializing string variables- Reading String from terminal –Writing Strings from to screen –String Handling functions

Introduction – Need for user-defined functions- Elements of User-Defined Functions- Definition of function -Return Values and their types - Function Calls-Function Declaration - Category of Functions- No arguments and no return values – Arguments but no return values – Arguments with return values – No arguments but return values - Nesting of Functions - Recursion - The Scope, Visibility and Lifetime of Variables Introduction – Need for user-defined functions- Elements of User-Defined Functions- Definition of function -Return Values and their types - Function Calls-Function Declaration - Category of Functions- No arguments and no return values – Arguments but no return values – Arguments with return values – No arguments but return values - Nesting of Functions - Recursion - The Scope, Visibility and Lifetime of Variables Defining and declaring structure variables – Accessing structure members - structure Initialization - Structures within structures - Unions – Size of Structures - Bit Fields

Understanding pointers-Accessing the address of a variable - Declaration and Initialization of pointer Variable - Accessing a variable through its pointer - Chain of pointers - Pointer Expressions - Pointers and Arrays- Pointers and Strings - Array of pointers - Pointers as Function Arguments - Functions returning pointers - Pointers to Functions - Pointers and Structures Defining, Opening and closing a file – Input /Output Operations on files - Errors handling during I/O Operations – Random Access to files – Command line arguments.