实验任务8

#include <stdio.h>
#include <math.h>
int main()
{
    double a, b, c, s, area;
    while(scanf("%lf", &a) != EOF&&scanf("%lf", &b) != EOF&&scanf("%lf", &c) != EOF){
        s=(a+b+c)/2;
        area=sqrt(s*(s-a)*(s-b)*(s-c));
        printf("a = %d,b = %d,c= %d,",int(a),int(b),int(c));
        printf("area = %.3f\n",area);
    }

 return 0; 
}