reading pixels from y frame (yuv frame) using fread()?

hi..i would like to know to read pixels and later store the pixel values in arrays..do i use fread()? if yes how? this is a part of my code..please reply ASAP...thank you
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Code:

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fseek(vidf, 0L, SEEK_SET); //same as rewind(vidf)
  //initialize array
  for(k=0;k<256;k++){
        inityHist[k]=0;
        }
  fseek(vidf,(54+4*256),SEEK_SET);

      for(rowpixels=0;rowpixels<height;rowpixels++){
        for(colpixels=0; colpixels<width; colpixels++){
          fread(ttemp, sizeof(char), 1, vidf);
         
                        grayscaleV = *ttemp;
            inityHist[grayscaleV] = inityHist[grayscaleV] + 1; //to check the ocurences of pixel
            totalPixels++;
            }
      }
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All things being equal, like ttemp pointing at some valid memory, and say the file opened with "rb" mode, and the initial fseek offset being OK, it should be fine.

This stuff is interesting me. I would like to know how this is working out. Do you have to use a pointer to the video memory? I don't get that:

Code:

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fseek(vidf,(54+4*256),SEEK_SET);

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Is this supposed to point on pixel memory? Is this in a file?

I'm all mixed up. :confused:

Since fseek sets the file position in a file, I'd guess it seeks (54+4*256) characters from the beginning of the file (SEEK_SET). http://www.cppreference.com/stdio/fseek.html

[edit] sizeof(char) is always 1, but you can leave it in if you want to. [/edit]