How does this code work?

#1

int i, sum=0; i = 0; while(i<3) {
sum += * ( * (arr+i)+(i++)); }
printf(“sum:%d”, sum);

#2

“a” points to the first row. If you add 1 to “a” then we get the pointer to second row of the matrix.-- (a + 1) This is a pointer to the second row

  • ( * (a + 1) This is a pointer to the elements of the second row and points to the first element of 2nd row
  • (*(a + 1) + 5) This is a pointer to the 6th element in the second row
  • *( *(a + 1) + 5) This is the 6th element in the second row.

Now you can try on your own.

#3

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