A string is a palindrome if it reads the same from front to back as it does from back to front (e.g. "kayak", "rotator" and "noon" are palindromes). When determining whether an alphanumeric string is a palindrome, we often ignore spaces, punctuation and case in the string (e.g. "A man, a plan, a canal --Panama!" is also considered a palindrome). Write a complete C program to read a string, echo it to the screen, determine whether it is a palindrome, and write a message indicating whether it is or isn't. Your main function should prompt for the string, read the string, print it, call the clean function (to remove all spaces, punctuation, and turn uppercase letters into lowercase letters), print the new string, then call the reverse function (to place the characters into reverse order) and print the new string resulting. In the final step, you will compare the result of the reverse function with the original string and print a message if the string is a palindrome or not. The clean function takes the original string and removes all characters that are not alphanumeric and converts letters to lowercase if necessary. Its prototype (header) is void clean (char before[], char after[]) The reverse function places the characters of the original string in reverse order (ex: "abcde" becomes "edcba"). You must use a recursive solution for this function (no loops!). Its prototype (header) is void reverse (char before[], char after[])

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A string is a palindrome if it reads the same from front to back as it does from back to front (e.g. "kayak", "rotator" and "noon" are palindromes). When determining whether an alphanumeric string is a palindrome, we often ignore spaces, punctuation and case in the string (e.g. "A man, a plan, a canal --Panama!" is also considered a palindrome).

Write a complete C program to read a string, echo it to the screen, determine whether it is a palindrome, and write a message indicating whether it is or isn't.

Your main function should prompt for the string, read the string, print it, call the clean function (to remove all spaces, punctuation, and turn uppercase letters into lowercase letters), print the new string, then call the reverse function (to place the characters into reverse order) and print the new string resulting. In the final step, you will compare the result of the reverse function with the original string and print a message if the string is a palindrome or not.
The clean function takes the original string and removes all characters that are not alphanumeric and converts letters to lowercase if necessary. Its prototype (header) is
void clean (char before[], char after[])
The reverse function places the characters of the original string in reverse order (ex: "abcde" becomes "edcba"). You must use a recursive solution for this function (no loops!). Its prototype (header) is
void reverse (char before[], char after[])

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