STRINGS

Strings  in  C :

String :

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

Strings are used in string handling operations such as,

• Counting the length of a string.
• Comparing two strings.
• Copying one string to another.
• Converting lower case string to upper case.
• Converting upper case string to lower case.
• Joining two strings.
• Reversing string.

Declaration :

The string can be declared as follow :

Syntax:

 char string_nm[size];

Example:

 char name[50];
 

String Structure :

When compiler assigns string to character array then it automatically suppliesnull character ('\0') at the end of string. Thus, size of string = original length of string + 1.

 char name[7];

 name = "HARISH" 

                                                        

                                

     

Read Strings :

To read a string, we can use scanf() function with format specifier %s.

 char name[50];
 scanf("%s",name);
 

The above format allows to accept only string which does not have any blank space, tab, new line, form feed, carriage return.

Write Strings :

To write a string, we can use printf() function with format specifier %s.

 char name[50];
 scanf("%s",name);
 printf("%s",name);