c++ - 链接列表正在替换

Question

我正在使用 C++ 链表和 Visual Studio 创建表单并将其保存到 csv 文件中。我在这里遇到的问题是它工作正常，每次我添加时，它都会完美添加。但是在我关闭程序并重新打开并再次添加之后，整个数据是 csv 文件清除并添加一个新的。

所以基本上当我重新运行程序时，它不会添加产品，而是全部删除然后添加。

void BootLinkedList::bootSave()
    {
        ofstream infile;
        infile.open("footwear2.csv");
        Boots *node = head;
        while (node != NULL)
        {
            infile << node->getCode() << "," << node->getBrand() << "," << node->getColor() << "," << node->getSize() << "," << node->getPrice() << "," << node->getType() << "," << node->getSoleStyle() << "," << node->getBootType() << "," << node->getBootStyle() << "," << "-" << endl;
            node = node->getNext();
        }

        infile.close();
    }

Answer 1

改变

 infile.open("footwear2.csv");

到

 infile.open("footwear2.csv", ios::out | ios::app);

请参阅 references 中的拘留信息