void func_sampleline() 
{ 
    Ipp8u pSrc[5*4] = { 0, 1, 2, 3, 4, 
                        5, 6, 7, 8, 9, 
                        0, 9, 8, 7, 6, 
                        5, 4, 3, 2, 1 }; 
    IppiSize roiSize = {5, 4}; 
    IppiPoint pt1 = {1, 1}; 
    IppiPoint pt2 = {2, 3}; 
    Ipp8u pDst[3]; 
    int srcStep = 5; 
                
    ippiSampleLine_8u_C1R( pSrc, srcStep, roiSize, pDst, pt1, pt2 ); 
                                
  printf("%Result: d,    %d, %d\n", pDst[0], pDst[1], pDst[2] ); // << this wrong line 
  printf("%Result: %d, %d, %d\n", pDst[0], pDst[1], pDst[2] ); // this is correct line 
}