Discussion
What will be the output of the program ?
#include <stdio.h>
int main()
{
int arr[1]={10};
printf("%d\n", 0[arr]);
return 0;
}
Answer: B
Correct answer: 10
Subscripting is defined as a[i] being exactly *(a + i). Addition commutes, so *(a + i) is also *(i + a), which is i[a]. Therefore 0[arr] means arr[0], printing 10. It is legal but nobody writes it outside puzzles.
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