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

Standard Library String Functions

Standard Library String Functions

Function	Use
strlen	Finds length of a string
strlwr	Converts a string to lowercase
strupr	Converts a string to uppercase
strcat	Appends one string at the end of another
strncat	Appends first n characters of a string at the end of another
strcpy	Copies a string into another
strncpy	Copies first n characters of one string into another
strcmp	Compares two strings
strncmp	Compares first n characters of two strings
strcmpi	Compares two strings without regard to case ("i" denotes that this function ignores case)
stricmp	Compares two strings without regard to case (identical to strcmpi)
strnicmp	Compares first n characters of two strings without regard to case
strdup	Duplicates a string
strchr	Finds first occurrence of a given character in a string

strrchr	Finds last occurrence of a given character in a string
strstr	Finds first occurrence of a given string in another string
strset	Sets all characters of string to a given character
strnset	Sets first n characters of a string to a given character
strrev	Reverses string

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