words_palin_1.cpp

A group of word-analysis examples for C++/STL novices

/*
*  Description:
*
*    Examine whether a string is a palindrome.
*
*  History:
*
*    Initial version created by Royal, Mar. 2004.
*
*  Notes:
*
*    This code has been written to conform to standard C++ and STL. It has been
*    compiled successfully using GNU C++ 3.2, Borland C++ 5.5, and Visual C++ 7.0.
*/

#include <iostream>
#include <string>

using namespace std;

bool is_palindrome(const string& s)
{
    for (string::size_type i = 0; i != s.size(); ++i)
        if (s[i] != s[s.size() - 1 - i]) return false;
    return true; 
}

int main()
{
    string s;
    while (cin >> s)
    {
        if (is_palindrome(s)) cout << "\"" << s << "\"" << " is a palindrome" << endl;
        else cout << "\""<< s << "\"" << " is not a palindrome" << endl;
    }
    return 0;
}