/*
	Disable warnings generated
	when using STL with VC++ 6.0
	
*/
#pragma warning(disable:4786)

#include <stack>
#include <iostream>
#include <string>

using namespace std;

int main() {

	//create a stack of char
	stack<char> inputstack;

	//variable to store input phrase
	string input;

	//prompt user for phrase
	cout << "Enter phrase: ";

	//read entire phrase (including whitespace)
	getline(cin, input);

	//get c-style character array from input string
	const char* input_array = input.c_str();

	//for each character in the input phrase
	for(int i = 0; i < input.size(); i++) {
		//if the current character is A-Z or a-z
		//push onto the stack
		//in other words, omit whitespace, punctuation, and digits
		if((input_array[i] >= 65 && input_array[i] <= 90) ||
			input_array[i] >= 97 && input_array[i] <= 122) {
			inputstack.push(input_array[i]);
		}
	}

	/**
		Insert your code here.  You should use a second
		stack to determine if the phrase stored on 
		inputstack is a palindrome.
	**/

	return EXIT_SUCCESS;
}