如何使用文本文件行计数为链接列表初始化动态大小？

Question

我想将lineCount用于pLists [lineCount]而不是pLists [10000] 我怎样才能让行数只打开文件一次而没有矢量？

ifstream ifs(inputFileName);
string line="";

DlinkedList* pLists[10000];

//get line input from file to lists
while (getline(ifs, line)){
    for (int count=0;getline(ifs, line); count++) {
        //input string to Dlists
        pLists[count] = new DlinkedList(line,digitsPerNode);
        cout << "Lists" << count << ":";
        pLists[count]->printList();
    }
}