#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
//#define SWAP(N) ((N&0xaaaaaaaa)>>1)+((N&0x5555555)<<1)
//int main()
//{
//	int num = 10;
//	int ret = SWAP(num);
//	printf("%d", ret);
//	return 0;
//}
////10101010101010101010101010101010
//// 0000000000000000000000000001010
//// 0000000000000000000000000000101
//// 
//// 0000000000000000000000000000101
//// 
////00000000000000000000000000001010
//// 0000000000000000000000000000000
////01010101010101010101010101010101
//
//

struct S
{
	int a;
	short b;
	int c;
	char d;
};

#define OFFSETOF(struct_name,number_name) (int)&(((struct_name*)0)->number_name)
int main()
{
	printf("%d\n", OFFSETOF(struct S, a));
	printf("%d\n", OFFSETOF(struct S, b));
	printf("%d\n", OFFSETOF(struct S, c));
	printf("%d\n" ,OFFSETOF(struct S, d));
	return 0;

	

}