memory中数组的结束地址如何获取？ C编程

Question

If I have an address in memory for the start of an integer array, how do I figure out the end address of the array?

For example, if an array started at 0xFF000000 how would you return the address where the array ends?

Answer 1

given an address for an array of integers, you need to know how many are in the array since an integer can be zero. in other words without a delimiter indicated the end of the array, there is no way to know how many values were ACTUALLY stored in the array.

a basic heap array should at least have a second variable storing the number of elements. how else was it allocated right?

int nElements = 10; int *pInts = (int*)malloc(nElements * sizeof(int)); int *pEndOfArrayAddress = pInts + (nElements-1);