strings are the arrays of the characters ending with "\0"(null character)."\0"(null character) indicates the end of string.strings always lies in double quotes.while characters always lies in single quotes.
How to define strings in C:
char string[40]="errorless-c.blogspot.com is website.";
OR
char string[]="errorless-c.blogspot.com is website.";
Example program for strings:
#include<conio.h>
main()
{
char a[40]="errorless-c.blogspot.com is website";
clrscr();
printf("%s",a);
getch();
}
NOTE:there are many inbuilt functions to modify strings.to learn them on left hand side there is "string.h library".which contains functions.