Write a C program to do the following:

$($a$)$Get a string S

$($b$)$Write an user defined function to do the encoding each character in the string S as follows:

$($i$)$Convert the alphabet a to z$,$ b to y$,$ c to x$....$ m to n vice versa

$($ii$)$ Convert the alphabet A to Z$,$ B to Y$,$ C to X $....$ M to N vice versa

$($iii$)$ Convert the numeric digit $0$ to $9,1$ to $8,2374$ to $5$ vice versa

$($iv$)$Convert the special character to dot $(.)$

Example : if the input string is AbC#$123$ the output should be Zyx$\mathrm{.}876$