strings in c-language

                                              STRINGS
 
    
String :-

A string is a collection of characters. Strings are always enlosed in double quotes as "string_constant".
 

In C language Strings are defined as an array of characters or a pointer to a portion of memory containing ASCII characters. A string in C is a sequence of zero or more characters followed by a NULL '\0' character:

It is important to preserve the NULL terminating character as it is how C defines and manages variable length strings. All the C standard library functions require this for successful operation.

All the string handling functions are prototyped in: string.h or stdio.h standard header file. So while using any string related function, don't forget to include either stdio.h or string.h. May be your compiler differs so please check before going ahead.

If you were to have an array of characters WITHOUT the null character as the last element, you'd have an ordinary character array, rather than a string constant.

String constants have double quote marks around them, and can be assigned to char pointers as shown below. Alternatively, you can assign a string constant to a char array - either with no size specified, or you can specify a size, but don't forget to leave a space for the null character!

Declaration of Strings :-

     datatype variable name array length=value;

example :-  datatype is char, converted into string by using the
                   systemcode "%s",

                   char  a[10]={"hello"};
                                (or)
                   char a[10]={'h','e','l','l','o'};
                                (or)
                   char a[10]={{'h'},{'e'},{'l'},{'l'},{'o'}};
                
                   in strings space( ) , .  is also counted.