题解 | 计算三角形的周长和面积

#include<math.h>

int main()

{

float f1 = 0;

float f2 = 0;

float f3 = 0;

float circumference = 0;

float p = 0;

float area = 0;

scanf("%f %f %f", &f1, &f2, &f3);

circumference = f1 + f2 + f3;

p = circumference / 2;

area = sqrt(p * (p - f1) * (p - f2) * (p - f3));

printf("circumference=%.2f area=%.2f\n", circumference, area);

return 0;

}