Write a program that uses the function isPalindrome given in Example 6-6 (Palindrome). Test your program on the following strings:

madam, abba, 22, 67876, 444244, trymeuemyrt

Modify the function isPalindrome of Example 6-6 so that when determining whether a string is a palindrome, cases are ignored, that is, uppercase and lowercase letters are considered the same.

The isPalindrome function from Example 6-6 has been included below for your convenience.

bool isPalindrome(string str) { int length = str.length(); for (int i = 0; i < length / 2; i++) { if (str[i] != str[length  1  i]) { return false; } // if } // for loop return true; }// isPalindrome 

Your program should print a message indicating if a string is a palindrome:

madam is a palindrome