C++ 回文程序总是给出 0 (false) 作为输出问题；我的代码哪里错了？

Question

问题是它总是输出 0 (false) 作为结果。问题可能出在 isPalindrome 函数中，但我无法确定确切位置。如果有人帮助，将不胜感激。

#include <iostream>
#include <cmath>
#include <string>
using namespace std;

bool isPalindrome(string word)
{
    bool result;

    for (int i = 0; i <= word.length() - 1; i++)
    {
        if (word.at(i) == word.length() - 1)
        {
            result = true;
        }
        else
        {
            result = false;
        }
        return result;
    }
}

int main()
{
    string word1;
    int count;
    cout << "How many words do you want to check whether they are palindromes: " << flush;
    cin >> count;

    for (int i = 0; i < count; i++)
    {
        cout << "Please enter a word: " << flush;
        cin >> word1;
        cout << "The word you entered: " << isPalindrome(word1);
    }
}

Answer 1

试试这个:

bool isPalindrome(string word)
{
    bool result = true;
    for (int i = 0; i < word.length() / 2; i++) //it is enough to iterate only the half of the word (since we take both from the front and from the back each time)
    {
        if (word[i] != word[word.length() - 1 - i]) //we compare left-most with right-most character (each time shifting index by 1 towards the center)
        {
            result = false;
            break;
        }  
    }    
    return result;
}