分行读取文件内容

   char  aline[100];
    memset (aline, 0 , 100);

    fstream ifs( "e:/result.txt" );
    if (!ifs)
    {
        cout <<  "can not open file..."  << endl;
    }

    while (ifs)
    {
        ifs.getline(aline, 100);
        cout << aline << endl;
        memset (aline, 0 , 100);
    }
    ifs.close();        // 用完后，记得close