Int x[] = { 1, 4, 8, 5, 1, 4 };int *ptr, y;ptr = x + 4;y = ptr - x;What does y in the sample code above equal?A. -3B. 0C. 4D. 4 + sizeof( int )

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Vijaya Bhaskar M

  • Jul 24th, 2005

The correct choice is D . since in the program it is dealing only with the address not with the values present at the address. so it will add the 4 to the size of interger.

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  • Oct 17th, 2006

The correct answer is 'C' ...... As the value of ptr-x will always be in terms of "how many integer fields the two pointer differ".....
Moreover, answer can never be 'D', as it says 4 + sizeof(int), while the actual address should be 4*sizeof(int)...


  • Nov 11th, 2006

answer is -3

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  • Nov 26th, 2006

  int x, *ptr;
      *ptr = &x;

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