圓周長和面積

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include<stdbool.h>

#define pi 3.14
int main()
{
	int r;
	int round, area;
	scanf("%d", &r);
	round = 2 * pi * r;
	area = r * r * pi ;
	printf("%d\n%d\n", round, area);
}