AC代碼如下:
#include <bits/stdc++.h>
int main(){
double a,b,c,p,s;
scanf("%lf%lf%lf",&a,&b,&c);
p=(a+b+c)/2;
s=sqrt(p*(p-a)*(p-b)*(p-c));
printf("%.1lf\n",s);
return 0;
}
AC代碼如下:
#include <bits/stdc++.h>
int main(){
double a,b,c,p,s;
scanf("%lf%lf%lf",&a,&b,&c);
p=(a+b+c)/2;
s=sqrt(p*(p-a)*(p-b)*(p-c));
printf("%.1lf\n",s);
return 0;
}