Computer Science 101
                                Quiz H      Name ______________________


1. The correct way to access a green pixel in the input image is:

   a.  in_image[3 * inrow * incols + 3 * incol + 3]

   b.  in_image[3 * inrow * incols + incol + 1]

   c.  in_image[3 * inrow * incols + 3 * incol + 1]

   d.  in_image[3 * incol * inrows +  3 * inrow + 1]


2. Suppose int inrows = 400, int outrows = 800, and int row = 100;
   What is the value of the expression:

         row / outrows * inrows

   a. 200                            b. 50

   c. 0


3. Correct way to write out the grayscale pixel data is:

   a.  fwrite(out_image, 3, outrows * outtcols, stdout);

   b.  fwrite(out_image, 1, outrows * outcols, stdout);

   c.  fwrite(stdout, 3, outrows,  outcols, out_image);


4. The correct way to access a gray pixel in the output image is:

   a.  out_image[3 * row * outcols + col]

   b.  out_image[row * outcols + col]

   c.  out_image[col * outrows + row]

   d.  out_image[3 * row * outcols + 3 * col]