#include<stdio.h>
#include<stddef.h>

struct stuff
{
	char name[16];
};

typedef struct stuff STF;

STF array[] = {
	{"12"},
	{"122"},
	{"123"},
	{"12s"},
	{"12x"},
	{"132"},
	{"1c2"},
	{"1a2"},
	{"12z"},
};

int main()
{
	STF *p0 = &array[0];
	STF *p8 = &array[8];
	ptrdiff_t diff = p8 - p0;

	ptrdiff_t addr_diff=(char*)p8-(char*)p0;

	printf("%p\n", (void*)p0);
	printf("%p\n", (void*)p8);
	printf("%ld\n", (long)diff);
	printf("%ld\n", (long)addr_diff);
	printf("%p\n", (void*)(p8-8));
	return 0;
}
 

參考: https://blog.csdn.net/gdmmhym/article/details/6451554

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