matrix<T>::add_row() Example

// Function:    TestMatrixAddRow
// Returns:     LPXLOPER
// Description: Add a row to a matrix

//{{XLP_SRC(TestMatrixAddRow)
    // NOTE - the FunctionWizard will add and remove mapping code here.
    //    DO NOT EDIT what you see in these blocks of generated code!
IMPLEMENT_XLLFN2(TestMatrixAddRow, "RJ", "TestMatrixAddRow", 
    "RowsToAdd", "Example", "Add a row to a matrix", "Number of r"
    "ows to add\000", "\0", 1)

extern "C" __declspec( dllexport )
LPXLOPER TestMatrixAddRow(long lRowsToAdd)
{
    CXlOper xloResult;
//}}XLP_SRC

    if ( lRowsToAdd <= 0 )
        xloResult = xlerrNA;
    else
    {
        // Construct a matrix with 3 columns and no rows
        xlp::matrix<double> mat;
        mat.resize(0, 3);

        // An array of data to be added
        double adNew[3] = { 1.0, 2.0, 3.0 };

        // Add the new row lRowsToAdd times
        for ( long i = 0; i < lRowsToAdd; i++ )
            mat.add_row(adNew);

        // Copy the results to output
        xloResult = mat;
    }

    return xloResult.Ret();
}

Uses

matrix<T>::add_row