#include <stdio.h>

void main ()
{
	int data[8];
	int index;	/* 配列と型を合わせておく？ */
	int buf1, buf2;
	int kosu;
	
	kosu = sizeof(data) / sizeof(index);
	
	for (index = 0; index < kosu; index++) {
		data[index] = index * 2;
	}
	
	for (index = 0; index < kosu; index++) {
		printf(" %d", data[index]);
	}
	printf("\n");
	
	for (index = 0; index < kosu / 2; index++) {
		buf1 = data[index];	/* それぞれのバッファに読み込み */
		buf2 = data[kosu - index -1];
		
		data[index] = buf2;	/* 入れ替える */
		data[kosu - index -1] = buf1;
	}
	
	for (index = 0; index < kosu; index++) {
		printf(" %d", data[index]);
	}
	printf("\n");
}