In C++, write a stack-based application, assignment7.cpp, which can be used to recognize palindromes (strings spelled identically both backward and forwards). Your program should ignore spaces and punctuation, as well as alpha cases; so, for instance, the string Madam Im Adam counts as a palindrome. You must supply your own push and pop operations. For this exercise (alone) you can use global variables for the stack and the stack pointer. Be sure that your program does not let the user push more than 25 characters. Please add comments.