如何使用C++编写一个简单的电子词典程序？

struct Word {
    string word;
    string definition;
};

int hashFunc(string word, int arraySize) {
    int sum = 0;
    for (char c : word) {
        sum += (int)c;
    }
    return sum % arraySize;
}

void insertWord(Word* dictionary, int arraySize, string word, string definition) {
    int index = hashFunc(word, arraySize);
    dictionary[index].word = word;
    dictionary[index].definition = definition;
}

string searchWord(Word* dictionary, int arraySize, string word) {
    int index = hashFunc(word, arraySize);
    if (dictionary[index].word == word) {
        return dictionary[index].definition;
    } else {
        return "该单词不存在于词典中";
    }
}

int main() {
    int arraySize = 100; // 数组大小
    Word* dictionary = new Word[arraySize]; // 创建哈希表

    string word;
    while (true) {
        cout << "请输入要查询的单词（输入"exit"退出程序）：";
        cin >> word;

        if (word == "exit") {
            break;
        }
        
        string definition = searchWord(dictionary, arraySize, word);
        cout << word << "的定义是：" << definition << endl;
    }
    delete[] dictionary;
    
    return 0;
}