Difference between revisions of "My Notes"
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| − | <p>when passing a multi-D array as | + | <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> |
| + | <p>if pointer ptr + 5, the location vary depending onb which CPU being used(16-bit, 32-bit, 64-bit).</p> | ||
| + | <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> | ||
Revision as of 23:23, 21 June 2010
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.
if pointer ptr + 5, the location vary depending onb which CPU being used(16-bit, 32-bit, 64-bit).
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.
