Q4, 7 MCQ- Pointers

#1

Please explain Q4 and 7 of the MCQ- Pointers assignment

#2

@shivanshu.khajuria
4. Ans : B

free() can be called for NULL pointer, so no problem with free function call. The problem is memory leak, p is allocated some memory which is not freed, but the pointer is assigned as NULL. The correct sequence should be following:

free(p);
p = NULL;

In this code *(arr+i)+(i++) this will results in the addresses where i can be 0,1,2 in the loop and * ( * (arr+i)+(i++)) results in the garbage values at these addresses and then we are simply adding these values using the variable sum.

#3

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