need help in stack and queue!! please

[grubby]

Hi,I am a c++ beginner.
I am using vs,and I got a problem in my code which check a sentence whether a palindrome or not.

#include <iostream>
#include <stack>
#include <queue>
using namespace std;

int main ()
{
	bool palindrome = true;
	char character;
	StackType stack; 
	Queue queue;
	char stackChar;
	char queChar;

	cout << "Enter a string; press return." << endl;
	cin.get(character);
		
	while ( character != '\n'&& character != ','&& character != '.'&& character != ' ')
	{
		if ( isalpha (character))
			{
				character = tolower(character);
			}

		stack.Push ( character );
		queue. enqueue ( character );
		cin.get ( character );
	}

	while ( palindrome && !queue.isEmpty () )
	{
		stackChar = stack.Top ();
		stack.Pop ();
		queue.dequeue ( queChar );
		if ( stackChar != queChar )
			palindrome = false;
	}

	
	if ( palindrome )
		cout << "String is a palindrome." << endl;
	else
		cout << "String is not a palindrome." << endl;
	return 0;
}

Enter a string;press return.
Eve
String is a palindrome.

Enter a string;press return.
Eve,eve.
String is a palindrome.

It seems ok, but when I test this:

Enter a string;press return.
Able was I ere, I saw Elba.
String is not a palindrome.

but "Able was I ere, I saw Elba." in the assignment example is a palindrome.
can anyone tell me whats wrong with my code? please.

[abhishekm71]

remove the comma from the statement and then test.

EDIT: your while loop does not check for more characters if it encounters a comma. which means your program only evaluates the string

able was i ere

(not a palindrome)

[grubby]

Hi, I try remove the comma from the statement, it still can't test Able was I ere, I saw Elba. is a palindrome

[abhishekm71]

you have to remove the comma from your test statement. It should now become

Able was I ere I saw Elba

and not

Able was I ere, I saw Elba

[grubby]

oh. I see. But my assignment is check a sentence, which contain comma and period in the sentence. Even my second tese "Eve,eve." works. So i think is not the test statement wrong. something wrong in the code.

[keskiverto]

Line 18. You stop processing input when the first word ends. Shouldn't you rather read the whole sentence and merely ignore the insignificant characters?

[grubby]

Hi, Keskiverto,
yes. I have though that too. I knew i should read the whole sentence first and ignore the ',' and '.' store to the stack, and queue, just dont know how.

[abhishekm71]

while ( character != '\n' ) {
   if ( character != ','&& character != '.'&& character != ' ' ) {
       // do stuff
   }
   cin.get ( character );
}