题解 - 三角形面积

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zhoulinzheng LV 3 @ 2023-12-26 13:13:11

#include<bits/stdc++.h>
 using namespace std; 
int main() 
{
double a,b,c,s,p; 
cin>>a>>b>>c;
 p=(a+b+c)/2.00; 
s=p*(p-a)*(p-b)*(p-c); 
if(a+b>c&&a-b<c)
 {
cout<<fixed<<setprecision(2)<<sqrt(s);
} 
else
{
cout<<"Error!";
}
 return 0;
 }

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24刘进腾 LV 4 @ 2024-11-8 17:49:14

#include<bits/stdc++.h> using namespace std; int main() { double a,b,c,p; cin>>a>>b>>c; p=(a+b+c)/2; if(a+b>c&&a+c>b&&b+c>a) cout<<fixed<<setprecision(2)<<sqrt(p*(p-a)(p-b)(p-c)); else cout<<"Error!"; return 0; }
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23-0110 LV 4 @ 2023-12-27 13:52:41

#include<bits/stdc++.h> using namespace std; int main() { int a,b,c,p,s; cin>>a>>b>>c; p=(a+b+c)/2; s=p*(p-a)(p-b)(p-c); if(a+b>c&&b+c>a&&a+c>b) { cout<<fixed<<setprecision(2)<<sqrt(s); } else { cout<<"Error!"; } return 0; }
-1
长崎素世 LV 5 @ 2024-11-11 17:15:23

#include<bits/stdc++.h> using namespace std; int main() { double a,b,c,s,p; cin>>a>>b>>c; a>0, b>0, c>0, p=(a+b+c)/2, s=p*(p-a)(p-b)(p-c); if(a+b>c&&a+c>b&&b+c>a){cout<<fixed<<setprecision(2)<<sqrt(s);} else{cout<<"Error!";} return 0; }
-1
中分头背带裤我叫ikun你记住 (liusheng) LV 5 @ 2024-11-10 13:14:16

#include<bits/stdc++.h> using namespace std; int main() { double a,b,c,p,s; cin>>a>>b>>c; p=(a+b+c)/2; s=p*(p-a)(p-b)(p-c); if(a+b>c&&a+c>b&&b+c>a) { cout<<fixed<<setprecision(2)<<sqrt(s); } else { cout<<"Error!"; } return 0; }
-1
kaka LV 6 @ 2024-11-9 13:08:50

#include<bits/stdc++.h> using namespace std; int main() { double a,b,c,s; cin>>a>>b>>c; s=(a+b+c)/2; if(a+b>c&a-b<c) { cout<<fixed<<setprecision(2)<<s; } else { cout<<"Error!"; } return 0; }
-1
23yueyuanzhe LV 3 @ 2024-1-2 13:28:59
#include<bits/stdc++.h> using namespace std; int main() { int a,b,c,n,s; cin>>a>>b>>c; n=(a+b+c)/2; s=n*(n-a)(n-c)(n-b); if(a+b>c&&b+c>a&&a+c>b) { cout<<fixed<<setprecision(2)<<sqrt(s);
```
}
else
{
	cout<<"Error!";
}

return 0;
```
}
-1
23Ke_Gengar (23xiaoke) LV 5 @ 2023-12-27 13:47:52

#include<bits/stdc++.h> using namespace std; int main() {double a,b,c,s,p; cin>>a>>b>>c; if(a+b>c&&a-b<c) {p=(a+b+c)/2; s=sqrt(p*(p-a)(p-b)(p-c)); cout<<fixed<<setprecision(2)<<s; } else {cout<<"Error!"; } return 0; }
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23邹天乐 LV 5 @ 2023-12-25 13:55:23

#include<bits/stdc++.h> using namespace std; int main() {double a,b,c,s,p; cin>>a>>b>>c; p=(a+b+c)/2; s=p*(p-a)(p-b)(p-c); if(a+b>c&&a-b<c) {cout<<fixed<<setprecision(2)<<sqrt(s);} else{cout<<"Error!";} return 0; }
-1
23春泥 LV 6 @ 2023-12-25 13:24:51

#include<bits/stdc++.h> using namespace std; int main() { double a,b,c,s,p; cin>>a>>b>>c; if(a+b>c&&b+c>a&&a+c>b) { p=(a+b+c)/2; s=sqrt(p*(p-a)(p-b)(p-c)); cout<<fixed<<setprecision(2)<<s; } else { cout<<"Error!"; } return 0; }
-1
23luyazhou LV 3 @ 2023-12-25 13:18:26

#include<bits/stdc++.h> using namespace std; main() { double a,b,c,s,p,h; cin>>a>>b>>c; if(a+b>c&&a+c>b&&b+c>a) { p=(a+b+c)/2; s=p*(p-a)(p-b)(p-c); h=sqrt(s); cout<<fixed<<setprecision(2)<<h; } else{cout<<"Error!"; } }