题解 | 计算三角形的周长和面积
计算三角形的周长和面积
https://www.nowcoder.com/practice/109a44d649a142d483314e8a57e2c710
#include <iostream>
#include<cmath>
using namespace std;
int main() {
int a,b,c;
char ch;
cin >> a >> b >>c;
double circle = a+b+c;
double p = circle/2;
double s = sqrt(p*(p-a)*(p-b)*(p-c));
printf("circumference=%.2lf area=%.2lf",circle,s);
}