将带有字母A的单词附加到文件text c++时出现问题

#include <iostream>
#include <fstream>
#include <string>
#include <vector>

// 函数：检查单词是否包含字母A
bool containsLetterA(const std::string& word) {
    return word.find('A') != std::string::npos;
}

// 函数：将带有字母A的单词附加到文件
void appendWordsWithAToFile(const std::vector<std::string>& words, const std::string& filename) {
    std::ofstream file(filename, std::ios::app); // 以追加模式打开文件

    if (!file.is_open()) {
        std::cerr << "无法打开文件: " << filename << std::endl;
        return;
    }

    for (const auto& word : words) {
        if (containsLetterA(word)) {
            file << word << std::endl;
        }
    }

    file.close();
}

int main() {
    std::vector<std::string> words = {"Apple", "Banana", "Apricot", "Cherry"};
    std::string filename = "text.txt";

    appendWordsWithAToFile(words, filename);

    return 0;
}