c++ - C++ 中的 .dat ASCII 文件 I/O

Question

我有一个带有 ASCII 字符的 .dat 文件，如下图所示:

它基本上是一系列 16 位数字。我可以在我的数据结构中以无符号短整型的形式读取它，但我不知道如何将我的无符号短整型保存为与输入相同的格式。这是我当前的代码，虽然值是正确的，但格式不是。见下图:

有人知道我应该如何将其保存为输入格式吗？这是我的保存功能”

void SavePxlShort(vector<Point3D> &pts, char * fileName)
{
    ofstream os(fileName, ios::out);

    size_t L = pts.size();
    cout << "writing data (pixel as short) with length "<< L << " ......" << endl;

    unsigned short pxl;
    for (long i = 0; i < L; i++)
    {
        pxl = Round(pts[i].val());
        if (pts[i].val() < USHRT_MAX)
        {
            os <<  pxl << endl;
        }
        else
        {
            cout << "pixel intensity overflow ushort" << endl;
            return;
        }
    }

    os.close();

    return;
}

Answer 1

void SavePxlShort(vector<Point3D> &pts, char * fileName)
{
    ofstream os(fileName, ios::out, ios::binary);

    size_t L = pts.size();
    cout << "writing data (pixel as short) with length "<< L << " ......" << endl;

    unsigned short* pData = new unsigned short[L];
    unsigned short pxl;
    for (long i = 0; i < L; i++)
    {
        pxl = pts[i].val();
        if (pts[i].val() < USHRT_MAX)
        {
            pData[i] = pxl ;
        }
        else
        {
            cout << "pixel intensity overflow ushort" << endl;
            return;
        }
    }

    os.write(reinterpret_cast<char*> (pData), sizeof(unsigned short)*L);
    os.close();

    delete pData;

    return;
}