Is this the correct way to assign array value?

Code:

unsigned char *m_pVolumeData;
m_pVolumeData = new unsigned char[m_nSizeX * m_nSizeY * m_nSizeZ];

FILE *fp = fopen(filename, "rb");
if(fp) {
      fread(m_pVolumeData, 1, m_nSizeX * m_nSizeY * m_nSizeZ, fp);
      fclose(fp);

}

unsigned char *pSrcPixels = new unsigned char[m_nSizeX * m_nSizeY];
for(int m=0; m<m_nSizeX * m_nSizeY; m++) { //copy the value to psrcpixels
     //is this the correct way to assign the value to another array??
      pSrcPixels[m] = m_pVolumeData[sliceNo * (m_nSizeX * m_nSizeY)+m];

}

Hi, like to check with you all.

Whether within the for loop, assigning the values are correct? I was to assign the value of m_pVolume to pSrcPixels but it doesnt seem to assign it correct. Pls help.