28 lines
591 B
C++
28 lines
591 B
C++
|
#include<iostream>
|
|||
|
|
#include<math.h>
|
|||
|
|
using namespace std;
|
|||
|
|
int main()
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
double a,b,c;
|
|||
|
|
double v,p;
|
|||
|
|
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:"<<endl;
|
|||
|
|
cin>>a>>b>>c;
|
|||
|
|
if(a+b>c&&a+c>b&&b+c>a)
|
|||
|
|
{
|
|||
|
|
p=(a+b+c)/2;
|
|||
|
|
v=sqrt(p*(p-a)*(p-b)*(p-c));
|
|||
|
|
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<v<<endl;
|
|||
|
|
if(a==b&&a==c)
|
|||
|
|
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵȱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>"<<endl;
|
|||
|
|
else
|
|||
|
|
if(a==b&&a!=c||a==c&&a!=b||b==c&&b!=a)
|
|||
|
|
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>"<<endl;
|
|||
|
|
if((a*a+b*b==c*c)||(a*a+c*c==b*b)||(c*c+b*b==a*a))
|
|||
|
|
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>"<<endl;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鲻<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>"<<endl;
|
|||
|
|
return 0;
|
|||
|
|
}
|