Question

I have a file which contains pixel coordinates in the following format :

234 324
126 345
264 345

I don’t know how many pairs of coordinates I have in my file.

How can I read them into a vector<Point> file? I am a beginner at using reading functions in C++.

I have tried this but it doesn’t seem to work :

vector<Point> iP, iiP;

ifstream pFile, rFile;
pFile.open("D:\\MATLAB\\WORKSPACE_MATLAB\\pData.txt");
rFile.open("D:\\MATLAB\\WORKSPACE_MATLAB\\rData.txt");

string rBuffer, pBuffer;
Point rPoint, pPoint;

while (getline(pFile, pBuffer))
{
    getline(rFile, rBuffer);

    sscanf(rBuffer.c_str(), "%d %d", rPoint.x, rPoint.y);
    sscanf(pBuffer.c_str(), "%d %d", pPoint.x, pPoint.y);

    iP.push_back(pPoint);
    iiP.push_back(rPoint);
}

I receive some odd memory errors. Am I doing something wrong? How can I fix my code so that it can run?

Answer 1

Thanks to Chris Jester-Young and enobayram I have managed to solve my problem. I have added bellow my code.

vector<Point> iP, iiP;

ifstream pFile, rFile;
pFile.open("D:\\MATLAB\\WORKSPACE_MATLAB\\pData.txt");
rFile.open("D:\\MATLAB\\WORKSPACE_MATLAB\\rData.txt");
stringstream ss (stringstream::in | stringstream::out);

string rBuffer, pBuffer;


while (getline(pFile, pBuffer))
{
    getline(rFile, rBuffer);

    Point bufferRPoint, bufferPPoint;

    ss << pBuffer;
    ss >> bufferPPoint.x >> bufferPPoint.y;

    ss << rBuffer;
    ss >> bufferRPoint.x >> bufferRPoint.y;

    //sscanf(rBuffer.c_str(), "%i %i", bufferRPoint.x, bufferRPoint.y);
    //sscanf(pBuffer.c_str(), "%i %i", bufferPPoint.x, bufferPPoint.y);

    iP.push_back(bufferPPoint);
    iiP.push_back(bufferRPoint);
}