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POPart 1: Referencing an Array Without Using Pointers and only Subscripting | Part 2: "..." with Pointers
 

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    <pre><code>#include &lt;iostream&gt; #include &lt;time.h&gt; using namespace std; void my_func(); int main() { float start_time = clock(); cout &lt;&lt; "Starting time of clock: " &lt;&lt; start_time; cout &lt;&lt; endl &lt;&lt; endl; for (int i = 0; i &lt; 100000; i++) { my_func(); } float end_time = clock(); cout &lt;&lt; "Ending time of clock: " &lt;&lt; end_time; cout &lt;&lt; endl &lt;&lt; endl; } void my_func() { int my_array[5][5]; } </code></pre> <p>I need to write a program that does a large number of references to elements of a two-dimensional array, using only subscripting. This is really a two-part project, but I'm only concerned with getting the first part right. The second part allows the use of pointers but for now, I am only subject to "subscripting" (indices?). Any advice on how to proceed?</p> <p>I have successfully completed the first part thanks to Volkan İlbeyli. I am now moving on to the second part:</p> <p>I need to write a program that does a large number of references to elements of a two-dimensional array, using pointers and pointer arithmetic. Here's what I have so far:</p> <pre><code>#include &lt;iostream&gt; #include &lt;time.h&gt; using namespace std; void my_func(); int main() { float start = clock(); for (int i = 0; i &lt; 100000; i ++) { my_func(); } float end = clock(); cout &lt;&lt; "Ending time of clock: " &lt;&lt; (end - start) / ((double)CLOCKS_PER_SEC); } void my_func() { int my_array[10][10]; for (int i = 0; i &lt; 10; i++) { for (int j = 0; j &lt; 10; j++) { *(my_array+i+j); } } } </code></pre> <p>I have done the first part and now I am working on the next part. I just want to know if I've missed anything. The code works fine and so does the program. Pointers are not my strongpoint and it took me a lot of time on the Internet to find my answers. Asking for a technical standpoint now on pointers and "pointer arithmetic".</p>
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      1. POPart 1: Referencing an Array Without Using Pointers and only Subscripting | Part 2: "..." with Pointers
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    1. COI don't get it. Can you please rephrase?
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    2. COIs your program going to be doing anything with these "large number of references"? Why must you use "only subscripting"? What's wrong with using pointers?
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    3. COCan you clarify what you mean by, "only come up with using pointers"? You should be able to access the array elements by array indices: `my_array[i][j] = x;`
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