Форум

#include <iostream> 
 #include <vector> 
 #include <string> 
  
 using namespace std; 
  
 int main(){ 
  
 	string words; 
  
 	cout <<"Enter words : " ; 
 	getline( cin,words ); 
  
 	string wordsReverse( words.rbegin() , words.rend() ); 
 	cout << "\nBackwards , it's : " << wordsReverse << endl << endl; 
  
  
 	if( words == wordsReverse ) 
 		cout << words << " is a palindrome !" << endl; 
 	else 
 		cout << words << " is not a palindrome ! " << endl; 
  
 	system( "pause" );//Pause window 
 	return 0;//Exit Program 
 }

i know it's not hard .
but the problem is , here is the question
A palindrome is a sequence of characters, numbers or words that have the property of reading the same in either direction (backwards or forwards). In a palindrome white space and punctuation have no significance (they are typically ignored).

Examples of palindromes are shown below.

121 - A numeric sequence
GACTTCAG - A DNA Sequence
Sator Arepo tenet opera rotas - A latin phrase for: The farmer by his labour keeps the wheels to the plough.

As you can see in the last example, white space and capitalisation are ignored. You are to write a program that takes in a sequence and works out if it is/isn’t a palindrome. We are going to do this in three different ways.

how to ignore capitalisation and while space ?
Besides that . how to change the iterator STL to vector STL ?