Exercise $9$ Developing Shell Scripts with functions

$1.$ Develop a script to prompt the user enter an integer, determine if the value is even or odd.

$-$ Modify this program to use a function with one parameter called isEven

$2.$ Prompt the user to enter A$,$B$,$C :

if A is entered print :$$This is A$$

if B is entered print :$$This is B$$

if C is entered print :$$This is C$$

$-$ Modify the program to use a function with no parameters

$-$ Repeat the program until the user enters an empty string

$3.$ Modify the palindrome script to have a function with one parameter $($the string to check$)$

The function returns $1$ if the parameter is palindrome and $0$ otherwise.

Test the newly created function

Due: Friday August $9,$ at $11$:$59$ pm