C | Storage Classes and Type Qualifiers | Question 19

Output?

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#include <stdio.h>
int main()
{
  register int i = 10;
  int *ptr = &i;
  printf("%d", *ptr);
  return 0;
}

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(A) Prints 10 on all compilers

(B) May generate compiler Error

(C) Prints 0 on all compilers

(D) May generate runtime Error



 Answer: (B) 

Explanation: See point 1 of Register Keyword

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