#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <stddef.h>

struct address {
	char name[50];
	char street[50];
	int phone;
};

struct stu {
	char name[20];
	char sex[10];
	int age;
};

#define MyOffestof(structName, memberName)  (size_t)&(((structName *)0)->memberName)

int main()
{
	printf("%d\n", MyOffestof(struct stu, age));
	printf("%d\n", MyOffestof(struct address, phone));
	return 0;
}



//#include <stddef.h>
//#include <stdio.h>
//
//struct address {
//	char name[50];
//	char street[50];
//	int phone;
//};
//
//int main()
//{
//	printf("address 结构中的 name 偏移 = %d 字节。\n",
//		offsetof(struct address, name));
//
//	printf("address 结构中的 street 偏移 = %d 字节。\n",
//		offsetof(struct address, street));
//
//	printf("address 结构中的 phone 偏移 = %d 字节。\n",
//		offsetof(struct address, phone));
//
//	return(0);
//}