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pointers

P: 48
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  1. main()
  2. {
  3. int arr[2][2][2]={10,2,3,4,5,6,7,8};
  4. int *p, *q;
  5. p=&arr[1][1][1];
  6. *q=***arr;
  7. printf("%d%d%d",*p,*q);
  8. }
for the above program my compiler gives the output as 8 10
Can you kindly explain the result
Sep 13 '10 #1
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3 Replies


Banfa
Expert Mod 5K+
P: 8,916
Yes, at line 6 you dereference an uninitialised pointer and write to were it points invoking undefined behaviour.

Once undefined behaviour is invoked the program can do (and print) anything.
Sep 13 '10 #2

Expert 100+
P: 2,398
Line 7 has three "%d"s, but you only pass two integers.
Sep 13 '10 #3

weaknessforcats
Expert Mod 5K+
P: 9,197

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