not. 3. Write a C program that takes a string from the user and finds out if the string is a palindrome or . If the string is palindrome then the program turns all the alphabets in the string into upper case alphabets using the user defined function *upperCase (char * s) and appends it to a file which stores palindrome strings. The program can also read from the file and print its contents to the console window. If the string is not a palindrome then the program turns all the alphabets in the string into lower case alphabets using the user defined function *lowerCase(char * s) and appends it to another file which stores the non palindrome strings. The program can also read from the file and print its contents to the console window