Strings

Introduction:

A string is a group of characters of any length. A string enclosed within double quotation marks is known as a literal.For example , "Hello" is a literal.This string can be stored and manipulated as array of  characters in C.The last character in a string is always '\0' a null character with ASCII value equal to 0.Thus the effective size of the  array of characters is one more the the size of string it can hold.For example , the string "ALLCOMPILER" can be stored in an array as shown below.

                                                      

0  1  2  3  4  5  6  7 8 9 10  11

A

L

L

C

O

M

P

I

L

E

R

\0

This string requires total 11 locations of array item:10 for the alphabets in the string ALLCOMPILER and one for the null character.

More About Strings

Declaration and Initialization
Standard library Functions

• strlen( )
• strcat( )
• strcpy( )
• strcmp( )
• strrev( )
• strupr( )
• strlwr( )

Passing strings to functions