题解 | #计算三角形的周长和面积#

#include <stdio.h>
int main()
{
	int a = 0;
	int b = 0;
	int c = 0;
	scanf("%d %d %d", &a, &b, &c);
	float cir = a + b + c;
	float p = 0;
	float area = 0;
	if (a, b, c > 0 && a, b, c < 10000)
	{
		if (a + b > c && b + c > a && a + c > b)
		{
			cir = a + b + c;
			p = cir/2;
			area = sqrt(p * (p - a) * (p - b) * (p - c));
		}
	}
	printf("circumference=%.2f area=%.2f",cir, area);
	return 0;
}