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 $8,2$ to $7$

$4$ to $5$ vice versa

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

Example: If the input String is AbC#$123,$ the output should be ZyX$.876$