Write an expression that retrieves the value in the location immediately after the location pointed to by....?

Question

Write an expression that retrieves the value in the location immediately after the location pointed to by the integer pointer variable ip .

i seem to not understand the question(why cant my book speek english).

this is C/C++

Answer 1

the question is really simple. You are given an integer pointer, ip. i.e. int *ip;
and you want to find out the integer value in the next location, where ip is pointing. The answer is simple

*(ip +1)

to explain it further consider following line of code

int ip[4] = {1,2,3,4}

printf("%d %d %d %d", *ip,*(ip + 1), *(ip +2), *(ip+3));

the output is 1 2 3 4.
when you declare an integer array ip, it actually creates a pointer of type integer and referred this pointer as ip.The next elements in array are stored consecutevly in the memory. Hence by doing *(ip +n), you can get the value of nth element.