#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define N 1000
int main(void)
{
	int i, data[N];
	time_t start, end;
	
	start = clock();
	
	for(i = 0; i < N; i++){
		data[i] = rand() % 1000;
	}
	for(i = 0; i < N; i++){
		printf("%3d ", data[i]);
	}
	printf("\n");
	
	end=clock();
	
	printf("%f秒\n",(double)(end - start) / CLOCKS_PER_SEC);
	return 0;
}