Create a PolyLine in ArcObjects using C++

Code:
HRESULT loadRandomData(IFeatureClass * pFeatureClass, long numPts) 
{ 
        
        // start editing on the workspace 
        IDatasetPtr ipDataset(pFeatureClass); 
        IWorkspacePtr ipWksp; 
        ipDataset->get_Workspace(&ipWksp); 
        IWorkspaceEditPtr ipWkspEdit(ipWksp); 

        ipWkspEdit->StartEditing(VARIANT_TRUE); 
        ipWkspEdit->StartEditOperation(); 
        
        // Add rows using an insert cursor vs. create feature.. 
        IFeatureCursorPtr ipFeatureCursor; 
        if (FAILED(pFeatureClass->Insert(VARIANT_TRUE, 
&ipFeatureCursor))) 
        { 
                ipWkspEdit->AbortEditOperation(); 
                ipWkspEdit->StopEditing(VARIANT_FALSE); 
                return E_FAIL; 
        } 

        // seed the random number generator.. 
        srand( (unsigned)time( NULL ) ); 
        CComVariant varID; 

        IPolylinePtr ipLine(CLSID_Polyline); 
        IPointCollectionPtr ipPoints(ipLine); 

        IPointPtr ipPoint; 
        IFeatureBufferPtr ipFeatureBuffer; 
        double x, y; 
        for(long i=0;i<numPts;i++) 
        { 
                if 
(FAILED(pFeatureClass->CreateFeatureBuffer(&ipFeatureBuffer))) 
                        continue; 

                ipPoint.CreateInstance(CLSID_Point); 
                x = (-180 * ((double)rand()/RAND_MAX)) + 1; 
                y = (180 * ((double)rand()/RAND_MAX)) + 1; 
                ipPoint->put_X(x); 
                ipPoint->put_Y(y); 
                ipPoints->AddPoint(ipPoint, 0, 0); 

//              ipFeatureBuffer->putref_Shape((IGeometryPtr)ipPoint); 
//              ipFeatureCursor->InsertFeature(ipFeatureBuffer, &varID); 
        } 
        
        // Update the field values now 
        long iTextField, iLongField; 
        ipFeatureBuffer->putref_Shape((IGeometryPtr)ipLine); 
        pFeatureClass->FindField(CComBSTR("TextField"), &iTextField); 
        pFeatureClass->FindField(CComBSTR("LongField"), &iLongField); 
        ipFeatureBuffer->put_Value(iTextField, 
CComVariant(_T("SomeText"))); 
        ipFeatureBuffer->put_Value(iLongField, CComVariant(1000)); 

        ipFeatureCursor->InsertFeature(ipFeatureBuffer, &varID); 

        ipWkspEdit->StopEditOperation(); 
        ipWkspEdit->StopEditing(VARIANT_TRUE); 

        return S_OK; 
}