C Programming Tutorial

Computer Tutorial

Introduction & History of C Constants & there Types Variables & there Types C Keywords Data Type in C C - Operators First Program in C

Decision Control Statements The if statement Multiple if statement The if-else statement Ternary operator ( ? ) goto statement switch statement

Loops in C The While loop The do-while loop The for loop Nesting of Loops Break & Continue Statement

Array in C Declaration of an Array Entering Data into an Array Reading Data from an Array Array Elements in Memory Passing Array Elements to a Function Passing an Entire Array to a Function Two-Dimensional Arrays Initialising a 2-D Array Reading Data from 2-D Array Memory Map of 2-D Array Three-Dimensional Array

Pointer in C » Pointer Variables Declaration » Pointer Operators

String in C Pointers and Strings String Functions strlen( ) Function strcpy( ) Function strcat( ) Function strcmp( ) Function

Function in C Function Prototypes declaration Call by Value Call by Reference Returning Values Recursion

Structure in C Declaring a Structure Accessing Structure Members Structure Assignments Arrays of Structures Passing Structures to Functions Structure Pointers Uses of Structures

Union in C Difference Between Structure and Union

File Handling in C File Operations Opening a File Reading from a File Trouble in Opening a File Closing the File Writing to a File File Opening Modes File Handling Functions

Additional Tutorials on C

Objective Question on C

Pointer Variable

Pointer Variable

If a variable is going to be a pointer, it must be declared as such. A pointer declaration consists of a base type, an *, and the variable name.
The general form for declaring a pointer variable is :
Variable type *pointer name;
Eg-
int *j ;
where type is the base type of the pointer and may be any valid type. The name of the pointer variable is specified by name.
The base type of the pointer defines the type of object to which the pointer will point. All pointer operations are done relative to the pointer's base type. For example, when you declare a pointer to be of type int *, the compiler assumes that any address that it holds points to an integer.

A Simple Program Using Pointer to initialize and print the value and address of variable.

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