A palindrome is a string that reads the same backward as forward. For example, the words mom, dad, madam, and radar are all palindromes. Write a class Pstring that is derived from the STL string class. The Pstring class adds a member function "bool isPalindrome() that determines whether the string is a palindrome.

Write a program that defines symbolic names for several string literals (chars between quotes). * use each symbolic name in a variable definition. * use of symbolic to compose the assembly code instruction set can perform vara = (vara - varb) + (varc - vard); ensure that variable is in unsigned integer data type. * you should also further enhance your symbolic logic block to to perform expression by introducing addition substitution rule. vara = (vara+varb) - (varc+vard). required: debug the disassembly code and note down the address and memory information.