Pointer mcq ques 7

#1

pls explain the solution

#2

Hey @Shreya-Gupta-2383169445069382 let me give you a hint,

  • ( * (arr+i)+(i++))Íž is equivalent to
    arr[i][i++].
    I this solves your doubt mark it as resolved.
#3

After the conversion of pointer representation to matrix representation, it is clear that sum is sum of all elements of principal diagonal.