Difference between revisions of "My Notes"

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<p>when passing a multi-D array as parameter in function, the very first size of array can be unspecified while all the others must be specified.</p>
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<p>if pointer ptr + 5, the location vary depending onb which CPU being used(16-bit, 32-bit, 64-bit).</p>
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<li>when passing a multi-D array as parameter in function, the very first size of array can be unspecified while all the others must be specified.</li>
<p>a multi-D array like int x[3][4][2] contains 24 elements which locations range from 0 to 23. suppose ptr = x is a pointer, then &x[i][j][k] = pre + i*4*2 +j*2+k because i will be 0, 1, 2; j will be 0, 1, 2, 3; and k will be 0,1.</p>
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<li>if pointer ptr + 5, the location vary depending onb which CPU being used(16-bit, 32-bit, 64-bit).</li>
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<li>a multi-D array like int x[3][4][2] contains 24 elements which locations range from 0 to 23. suppose ptr = x is a pointer, then &x[i][j][k] = pre + i*4*2 +j*2+k because i will be 0, 1, 2; j will be 0, 1, 2, 3; and k will be 0,1.</li>
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Revision as of 23:24, 21 June 2010

  1. when passing a multi-D array as parameter in function, the very first size of array can be unspecified while all the others must be specified.
  2. if pointer ptr + 5, the location vary depending onb which CPU being used(16-bit, 32-bit, 64-bit).
  3. a multi-D array like int x[3][4][2] contains 24 elements which locations range from 0 to 23. suppose ptr = x is a pointer, then &x[i][j][k] = pre + i*4*2 +j*2+k because i will be 0, 1, 2; j will be 0, 1, 2, 3; and k will be 0,1.