String 

String

 A string is an array of characters terminated by a special character '\0' (null character). This null character marks the end of the string .

char str[] = "Tech";{ 'T', 'e', 'c', 'h','\0'} 

String Handling Functions :

 1.strlen()

 2.strcat()

 3.strrev()

 4.strupr()

 5.strlwr()

 6.strcmp()

 7.strcpy()