$-$In Chapter $8,$ we learned about a simple encryption algorithm called a Caesar cipher. Write a program in the language of your choice to implement the Caesar cipher

algorithm. Write a main function $($method$,$ procedure$)$ that collects a message from the user and writes it out again. Assume for simplicity that the message contains no

more than $10$ characters and that only the $26$ uppercase letters of the alphabet are used. Use an array of $10$ elements to store the message. Ask the user to enter no more

than $10$ characters, one per line, and to terminate the message by entering some special character such as $"\%."$ Use a variable to keep track of the number of array elements

actually used $($which could be fewer than $10$ if the message is short$)$ so that you do not write out meaningless characters stored at the end of the array.

$//$program to illustrate Caesar cypher

#include $ii=0=[i]+si=$iii$=0i$max