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