#include<bits/stdc++.h> using namespace std; double a,b,c; double baron(double a,double b,double c){ double p=(a+b+c)/2.0; return sqrt(p*(p-a)(p-b)(p-c)); } int main(){ cin>>a>>b>>c; printf("%.2f",baron(a,b,c)); return 0; }

点个关注！点个关注！点个关注！点个关注！点个关注！点个关注！点个关注！点个关注！点个关注！点个关注！ CPZT AGGO*** https://www.acgo.cn/problemset/7858/explanation?questionCollectionId=1476*** 我的主页：https://www.acgo.cn/person/3148818

我不会

| 1 | 4 | |--2-|--5-| | 3 | 6 |

#include<iostream> #include<cmath> using namespace std; double area(double a,double b,double c){ double p=0.5*(a+b+c); return sqrt(p*(p-a)(p-b)(p-c)); } int main(){ double a=0,b=0,c=0; cin>>a>>b>>c; printf("%.2lf",area(a,b,c)); }

#include<bits/stdc++.h> #include<cmath> using namespace std; double s,a,b,c,p; int main() { cin>>a>>b>>c; p = (a+b+c)/2; s = sqrt(p*(p-a)(p-b)(p-c)); printf("%.2f",s); return 0; }

2024/2/1 22:21

#include <bits/stdc++.h> using namespace std; void f(int a) { } int main() { double b,c,p,a; double s; cin>>a>>b>>c; p=(a+b+c)/2; s=sqrt(p*(p-a)(p-b)(p-c)); cout<<fixed<<setprecision(2)<<s<<endl; return 0; }

看完好用的点一个赞